Tokenize a string
Separate the string "Hello,How,Are,You,Today" by commas into an array (or list) so that each element of it stores a different word.
You are encouraged to solve this task according to the task description, using any language you may know.
Display the words to the 'user', in the simplest manner possible, separated by a period.
To simplify, you may display a trailing period.
- Metrics
- Counting
- Word frequency
- Letter frequency
- Jewels and stones
- I before E except after C
- Bioinformatics/base count
- Count occurrences of a substring
- Count how many vowels and consonants occur in a string
- Remove/replace
- XXXX redacted
- Conjugate a Latin verb
- Remove vowels from a string
- String interpolation (included)
- Strip block comments
- Strip comments from a string
- Strip a set of characters from a string
- Strip whitespace from a string -- top and tail
- Strip control codes and extended characters from a string
- Anagrams/Derangements/shuffling
- Word wheel
- ABC problem
- Sattolo cycle
- Knuth shuffle
- Ordered words
- Superpermutation minimisation
- Textonyms (using a phone text pad)
- Anagrams
- Anagrams/Deranged anagrams
- Permutations/Derangements
- Find/Search/Determine
- ABC words
- Odd words
- Word ladder
- Semordnilap
- Word search
- Wordiff (game)
- String matching
- Tea cup rim text
- Alternade words
- Changeable words
- State name puzzle
- String comparison
- Unique characters
- Unique characters in each string
- Extract file extension
- Levenshtein distance
- Palindrome detection
- Common list elements
- Longest common suffix
- Longest common prefix
- Compare a list of strings
- Longest common substring
- Find common directory path
- Words from neighbour ones
- Change e letters to i in words
- Non-continuous subsequences
- Longest common subsequence
- Longest palindromic substrings
- Longest increasing subsequence
- Words containing "the" substring
- Sum of the digits of n is substring of n
- Determine if a string is numeric
- Determine if a string is collapsible
- Determine if a string is squeezable
- Determine if a string has all unique characters
- Determine if a string has all the same characters
- Longest substrings without repeating characters
- Find words which contains all the vowels
- Find words which contains most consonants
- Find words which contains more than 3 vowels
- Find words which first and last three letters are equals
- Find words which odd letters are consonants and even letters are vowels or vice_versa
- Formatting
- Substring
- Rep-string
- Word wrap
- String case
- Align columns
- Literals/String
- Repeat a string
- Brace expansion
- Brace expansion using ranges
- Reverse a string
- Phrase reversals
- Comma quibbling
- Special characters
- String concatenation
- Substring/Top and tail
- Commatizing numbers
- Reverse words in a string
- Suffixation of decimal numbers
- Long literals, with continuations
- Numerical and alphabetical suffixes
- Abbreviations, easy
- Abbreviations, simple
- Abbreviations, automatic
- Song lyrics/poems/Mad Libs/phrases
- Mad Libs
- Magic 8-ball
- 99 Bottles of Beer
- The Name Game (a song)
- The Old lady swallowed a fly
- The Twelve Days of Christmas
- Tokenize
- Text between
- Tokenize a string
- Word break problem
- Tokenize a string with escaping
- Split a character string based on change of character
- Sequences
11l
<lang 11l>V text = ‘Hello,How,Are,You,Today’ V tokens = text.split(‘,’) print(tokens.join(‘.’))</lang>
- Output:
Hello.How.Are.You.Today
360 Assembly
<lang 360asm>* Tokenize a string - 08/06/2018 TOKSTR CSECT
USING TOKSTR,R13 base register
B 72(R15) skip savearea
DC 17F'0' savearea
SAVE (14,12) save previous context
ST R13,4(R15) link backward
ST R15,8(R13) link forward
LR R13,R15 set addressability
MVC N,=A(1) n=1
LA R7,1 i1=1
LA R6,1 i=1
DO WHILE=(C,R6,LE,LENS) do i=1 to length(s);
LA R4,S-1 @s-1
AR R4,R6 +i
MVC C,0(R4) c=substr(s,i,1)
IF CLI,C,EQ,C',' THEN if c=',' then do
BAL R14,TOK call tok
LR R2,R8 i2
SR R2,R7 i2-i1
LA R2,1(R2) i2-i1+1
L R1,N n
SLA R1,1 *2
STH R2,TALEN-2(R1) talen(n)=i2-i1+1
L R2,N n
LA R2,1(R2) n+1
ST R2,N n=n+1
LA R7,1(R6) i1=i+1
ENDIF , endif
LA R6,1(R6) i++
ENDDO , enddo i
BAL R14,TOK call tok
LR R2,R8 i2
SR R2,R7 i2-i1
LA R2,1(R2) i2-i1+1
L R1,N n
SLA R1,1 *2
STH R2,TALEN-2(R1) talen(n)=i2-i1+1
LA R11,PG pgi=@pg
LA R6,1 i=1
DO WHILE=(C,R6,LE,N) do i=1 to n
LR R1,R6 i
SLA R1,1 *2
LH R10,TALEN-2(R1) l=talen(i)
LR R1,R6 i
SLA R1,3 *8
LA R4,TABLE-8(R1) @table(i)
LR R2,R10 l
BCTR R2,0 ~
EX R2,MVCX output table(i) length(l)
AR R11,R10 pgi=pgi+l
IF C,R6,NE,N THEN if i^=n then
MVC 0(1,R11),=C'.' output '.'
LA R11,1(R11) pgi=pgi+1
ENDIF , endif
LA R6,1(R6) i++
ENDDO , enddo i
XPRNT PG,L'PG print
L R13,4(0,R13) restore previous savearea pointer
RETURN (14,12),RC=0 restore registers from calling sav
TOK LR R5,R6 i <--
BCTR R5,0 i-1 |
LR R8,R5 i2=i-1
SR R5,R7 i2-i1
LA R5,1(R5) l=i2-i1+1 source length
L R1,N n
SLA R1,3 *8
LA R2,TABLE-8(R1) @table(n)
LA R4,S-1 @s-1
AR R4,R7 @s+i1-1
LA R3,8 target length
MVCL R2,R4 table(n)=substr(s,i1,i2-i1+1) |
BR R14 End TOK subroutine <--
MVCX MVC 0(0,R11),0(R4) output table(i) S DC CL80'Hello,How,Are,You,Today' <== input string == LENS DC F'23' length(s) <== TABLE DC 8CL8' ' table(8) TALEN DC 8H'0' talen(8) C DS CL1 char N DS F number of tokens PG DC CL80' ' buffer
YREGS
END TOKSTR</lang>
- Output:
Hello.How.Are.You.Today
8080 Assembly
<lang 8080asm>puts: equ 9 org 100h jmp demo ;;; Split the string at DE by the character in C. ;;; Store pointers to the beginning of the elements starting at HL ;;; The amount of elements is returned in B. split: mvi b,0 ; Amount of elements sloop: mov m,e ; Store pointer at [HL] inx h mov m,d inx h inr b ; Increment counter sscan: ldax d ; Get current character inx d cpi '$' ; Done? rz ; Then stop cmp c ; Place to split? jnz sscan ; If not, keep going dcx d mvi a,'$' ; End the string here stax d inx d jmp sloop ; Next part ;;; Test on the string given in the task demo: lxi h,parts ; Parts array lxi d,hello ; String mvi c,',' call split ; Split the string lxi h,parts ; Print each part loop: mov e,m ; Load pointer into DE inx h mov d,m inx h push h ; Keep the array pointer push b ; And the counter mvi c,puts ; Print the string call 5 lxi d,period ; And a period mvi c,puts call 5 pop b ; Restore the counter pop h ; Restore the array pointer dcr b ; One fewer string left jnz loop ret period: db '. $' hello: db 'Hello,How,Are,You,Today$' parts: equ $</lang>
- Output:
Hello. How. Are. You. Today.
8086 Assembly
<lang asm> cpu 8086 org 100h section .text jmp demo ;;; Split the string at DS:SI on the character in DL. ;;; Store pointers to strings starting at ES:DI. ;;; The amount of strings is returned in CX. split: xor cx,cx ; Zero out counter .loop: mov ax,si ; Store pointer to current location stosw inc cx ; Increment counter .scan: lodsb ; Get byte cmp al,'$' ; End of string? je .done cmp al,dl ; Character to split on? jne .scan mov [si-1],byte '$' ; Terminate string jmp .loop .done: ret ;;; Test on the string given in the task demo: mov si,hello ; String to split mov di,parts ; Place to store pointers mov dl,',' ; Character to split string on call split ;;; Print the resulting strings, and periods mov si,parts ; Array of string pointers print: lodsw ; Load next pointer mov dx,ax ; Print string using DOS mov ah,9 int 21h mov dx,period ; Then print a period int 21h loop print ; Loop while there are strings ret section .data period: db '. $' hello: db 'Hello,How,Are,You,Today$' section .bss parts: resw 10</lang>
- Output:
Hello. How. Are. You. Today.
AArch64 Assembly
<lang AArch64 Assembly> /* ARM assembly AARCH64 Raspberry PI 3B */ /* program strTokenize64.s */
/*******************************************/ /* Constantes file */ /*******************************************/ /* for this file see task include a file in language AArch64 assembly*/ .include "../includeConstantesARM64.inc"
.equ NBPOSTESECLAT, 20
/*******************************************/ /* Initialized data */ /*******************************************/ .data szMessFinal: .asciz "Words are : \n"
szString: .asciz "Hello,How,Are,You,Today" szMessError: .asciz "Error tokenize !!\n" szCarriageReturn: .asciz "\n" /*******************************************/ /* UnInitialized data */ /*******************************************/ .bss /*******************************************/ /* code section */ /*******************************************/ .text .global main main:
ldr x0,qAdrszString // string address mov x1,',' // separator bl stTokenize cmp x0,-1 // error ? beq 99f mov x2,x0 // table address ldr x0,qAdrszMessFinal // display message bl affichageMess ldr x4,[x2] // number of areas add x2,x2,8 // first area mov x3,0 // loop counter mov x0,x2
1: // display loop
ldr x0,[x2,x3, lsl 3] // address area bl affichageMess ldr x0,qAdrszCarriageReturn // display carriage return bl affichageMess add x3,x3,1 // counter + 1 cmp x3,x4 // end ? blt 1b // no -> loop b 100f
99: // display error message
ldr x0,qAdrszMessError bl affichageMess
100: // standard end of the program
mov x0,0 // return code mov x8,EXIT // request to exit program svc 0 // perform the system call
qAdrszString: .quad szString //qAdrszFinalString: .quad szFinalString qAdrszMessFinal: .quad szMessFinal qAdrszMessError: .quad szMessError qAdrszCarriageReturn: .quad szCarriageReturn
/*******************************************************************/ /* Separate string by separator into an array */ /* areas are store on the heap Linux */ /*******************************************************************/ /* x0 contains string address */ /* x1 contains separator character (, or . or : ) */ /* x0 returns table address with first item = number areas */ /* and other items contains pointer of each string */ stTokenize:
stp x1,lr,[sp,-16]! // save registers mov x16,x0 mov x9,x1 // save separator mov x14,0
1: // compute length string for place reservation on the heap
ldrb w12,[x0,x14] cbz x12, 2f add x14,x14,1 b 1b
2:
ldr x12,qTailleTable
add x15,x12,x14
and x15,x15,0xFFFFFFFFFFFFFFF0
add x15,x15,16 // align word on the heap
// place reservation on the heap
mov x0,0 // heap address
mov x8,BRK // call system linux 'brk'
svc 0 // call system
cmp x0,-1 // error call system
beq 100f
mov x14,x0 // save address heap begin = begin array
add x0,x0,x15 // reserve x15 byte on the heap
mov x8,BRK // call system linux 'brk'
svc 0
cmp x0,-1
beq 100f
// string copy on the heap
add x13,x14,x12 // behind the array
mov x0,x16
mov x1,x13
3: // loop copy string
ldrb w12,[x0],1 // read one byte and increment pointer one byte strb w12,[x1],1 // store one byte and increment pointer one byte cbnz x12,3b // end of string ? no -> loop mov x0,#0 str x0,[x14] str x13,[x14,8] mov x12,#1 // areas counter
4: // loop load string character
ldrb w0,[x13] cbz x0,5f // end string cmp x0,x9 // separator ? cinc x13,x13,ne // no -> next location bne 4b // and loop strb wzr,[x13] // store zero final of string add x13,x13,1 // next character add x12,x12,1 // areas counter + 1 str x13,[x14,x12, lsl #3] // store address area in the table at index x2 b 4b // and loop
5:
str x12,[x14] // store number areas mov x0,x14 // returns array address
100:
ldp x1,lr,[sp],16 // restaur 2 registers ret // return to address lr x30
qTailleTable: .quad 8 * NBPOSTESECLAT
/********************************************************/ /* File Include fonctions */ /********************************************************/ /* for this file see task include a file in language AArch64 assembly */ .include "../includeARM64.inc" </lang>
- Output:
Words are : Hello How Are You Today
ACL2
<lang lisp>(defun split-at (xs delim)
(if (or (endp xs) (eql (first xs) delim))
(mv nil (rest xs))
(mv-let (before after)
(split-at (rest xs) delim)
(mv (cons (first xs) before) after))))
(defun split (xs delim)
(if (endp xs)
nil
(mv-let (before after)
(split-at xs delim)
(cons before (split after delim)))))
(defun css->strs (css)
(if (endp css)
nil
(cons (coerce (first css) 'string)
(css->strs (rest css)))))
(defun split-str (str delim)
(css->strs (split (coerce str 'list) delim)))
(defun print-with (strs delim)
(if (endp strs)
(cw "~%")
(progn$ (cw (first strs))
(cw (coerce (list delim) 'string))
(print-with (rest strs) delim))))</lang>
- Output:
> (print-with (split-str "Hello,How,Are,You,Today" #\,) #\.) Hello.How.Are.You.Today.
Action!
The user must type in the monitor the following command after compilation and before running the program!
SET EndProg=*
<lang Action!>CARD EndProg ;required for ALLOCATE.ACT
INCLUDE "D2:ALLOCATE.ACT" ;from the Action! Tool Kit. You must type 'SET EndProg=*' from the monitor after compiling, but before running this program!
DEFINE PTR="CARD"
BYTE FUNC Split(CHAR ARRAY s CHAR c PTR ARRAY items)
BYTE i,count,start,len CHAR ARRAY item
IF s(0)=0 THEN RETURN (0) FI
i=1 count=0
WHILE i<s(0)
DO
start=i
WHILE i<=s(0) AND s(i)#c
DO
i==+1
OD
len=i-start
item=Alloc(len+1)
SCopyS(item,s,start,i-1)
items(count)=item
count==+1
i==+1
OD
RETURN (count)
PROC Join(PTR ARRAY items BYTE count CHAR c CHAR ARRAY s)
BYTE i,pos CHAR POINTER srcPtr,dstPtr CHAR ARRAY item
s(0)=0 IF count=0 THEN RETURN FI
pos=1
FOR i=0 TO count-1
DO
item=items(i)
srcPtr=item+1
dstPtr=s+pos
MoveBlock(dstPtr,srcPtr,item(0))
pos==+item(0)
IF i<count-1 THEN
s(pos)='.
pos==+1
FI
OD
s(0)=pos-1
RETURN
PROC Clear(PTR ARRAY items BYTE POINTER count)
BYTE i CHAR ARRAY item
IF count^=0 THEN RETURN FI
FOR i=0 TO count^-1 DO item=items(i) Free(item,item(0)+1) OD count^=0
RETURN
PROC Main()
CHAR ARRAY s="Hello,How,Are,You,Today" CHAR ARRAY r(256) PTR ARRAY items(100) BYTE i,count
Put(125) PutE() ;clear screen AllocInit(0) count=Split(s,',,items) Join(items,count,'.,r)
PrintF("Input:%E""%S""%E%E",s)
PrintE("Split:")
FOR i=0 TO count-1
DO
PrintF("""%S""",items(i))
IF i<count-1 THEN
Print(", ")
ELSE
PutE() PutE()
FI
OD
PrintF("Join:%E""%S""%E",r)
Clear(items,@count)
RETURN</lang>
- Output:
Screenshot from Atari 8-bit computer
Input: "Hello,How,Are,You,Today" Split: "Hello", "How", "Are", "You", "Today" Join: "Hello.How.Are.You.Today"
ActionScript
<lang actionscript>var hello:String = "Hello,How,Are,You,Today"; var tokens:Array = hello.split(","); trace(tokens.join("."));
// Or as a one-liner trace("Hello,How,Are,You,Today".split(",").join("."));</lang>
Ada
<lang ada>with Ada.Text_IO, Ada.Containers.Indefinite_Vectors, Ada.Strings.Fixed, Ada.Strings.Maps; use Ada.Text_IO, Ada.Containers, Ada.Strings, Ada.Strings.Fixed, Ada.Strings.Maps;
procedure Tokenize is
package String_Vectors is new Indefinite_Vectors (Positive, String); use String_Vectors; Input : String := "Hello,How,Are,You,Today"; Start : Positive := Input'First; Finish : Natural := 0; Output : Vector := Empty_Vector;
begin
while Start <= Input'Last loop
Find_Token (Input, To_Set (','), Start, Outside, Start, Finish);
exit when Start > Finish;
Output.Append (Input (Start .. Finish));
Start := Finish + 1;
end loop;
for S of Output loop
Put (S & ".");
end loop;
end Tokenize;</lang>
ALGOL 68
<lang algol68>main:(
OP +:= = (REF FLEX[]STRING in out, STRING item)VOID:( [LWB in out: UPB in out+1]STRING new; new[LWB in out: UPB in out]:=in out; new[UPB new]:=item; in out := new );
PROC string split = (REF STRING beetles, STRING substr)[]STRING:(
""" Split beetles where substr is found """;
FLEX[1:0]STRING out;
INT start := 1, pos;
WHILE string in string(substr, pos, beetles[start:]) DO
out +:= STRING(beetles[start:start+pos-2]);
start +:= pos + UPB substr - 1
OD;
IF start > LWB beetles THEN
out +:= STRING(beetles[start:])
FI;
out
);
PROC char split = (REF STRING beetles, STRING chars)[]STRING: ( """ Split beetles where character is found in chars """; FLEX[1:0]STRING out; FILE beetlef; associate(beetlef, beetles); # associate a FILE handle with a STRING # make term(beetlef, chars); # make term: assign CSV string terminator #
PROC raise logical file end = (REF FILE f)BOOL: except logical file end; on logical file end(beetlef, raise logical file end);
STRING solo;
DO
getf(beetlef, ($g$, solo));
out+:=solo;
getf(beetlef, ($x$)) # skip CHAR separator #
OD;
except logical file end:
SKIP;
out
);
STRING beetles := "John Lennon, Paul McCartney, George Harrison, Ringo Starr";
printf(($g"."$, string split(beetles, ", "),$l$)); printf(($g"."$, char split(beetles, ", "),$l$))
)</lang>
- Output:
John Lennon.Paul McCartney.George Harrison.Ringo Starr. John.Lennon..Paul.McCartney..George.Harrison..Ringo.Starr.
Amazing Hopper
Hopper provides instructions for separating and modifying tokens from a string. Let "s" be a string; "n" token number:
1) {n}, $(s) ==> gets token "n" from string "s".
2) {"word", n} $$(s) ==> replace token "n" of "s", with "word".
Note: the "splitnumber" macro cannot separate a number converted to a string by the "XTOSTR" function, because this function "rounds" the number to the decimal position by default.
<lang Hopper>
- include <hopper.h>
- proto splitdate(_DATETIME_)
- proto splitnumber(_N_)
- proto split(_S_,_T_)
main:
s="this string will be separated into parts with space token separator"
aS=0,let( aS :=_split(s," "))
{","}toksep // set a new token separator
{"String: ",s}
{"\nArray:\n",aS},
{"\nSize="}size(aS),println // "size" return an array: {dims,#rows,#cols,#pages}
{"\nOriginal number: ",-125.489922},println
w=0,let(w:=_split number(-125.489922) )
{"Integer part: "}[1]get(w) // get first element from array "w"
{"\nDecimal part: "}[2]get(w),println // get second element from array "w"
{"\nDate by DATENOW(TODAY) macro: "},print
dt=0, let( dt :=_splitdate(datenow(TODAY);!puts)) // "!" keep first element from stack
{"\nDate: "}[1]get(dt)
{"\nTime: "}[2]get(dt),println
exit(0)
.locals splitdate(_DATETIME_)
_SEP_=0,gettoksep,mov(_SEP_) // "gettoksep" return actual token separator
{","}toksep, // set a new token separator
_NEWARRAY_={}
{1},$( _DATETIME_ ),
{2},$( _DATETIME_ ),pushall(_NEWARRAY_)
{_SEP_}toksep // restore ols token separator
{_NEWARRAY_}
back
splitnumber(_X_)
part_int=0,part_dec=0,
{_X_},!trunc,mov(part_int),
minus(part_int), !sign,mul
xtostr,mov(part_dec), part_dec+=2, // "part_dec+=2", delete "0." from "part_dec"
{part_dec}xtonum,mov(part_dec)
_NEWARRAY_={},{part_int,part_dec},pushall(_NEWARRAY_)
{_NEWARRAY_}
back
split(_S_,_T_)
_NEWARRAY_={},_VAR1_=0,_SEP_=0,gettoksep,mov(_SEP_)
{_T_}toksep,totaltoken(_S_),
mov(_VAR1_), // for total tokens
_VAR2_=1, // for real position of tokens into the string
___SPLIT_ITER:
{_VAR2_}$( _S_ ),push(_NEWARRAY_)
++_VAR2_,--_VAR1_
{ _VAR1_ },jnz(___SPLIT_ITER) // jump to "___SPLIT_ITER" if "_VAR1_" is not zero.
clear(_VAR2_),clear(_VAR1_)
{_SEP_}toksep
{_NEWARRAY_}
back
</lang>
- Output:
Output: String: this string will be separated into parts with space token separator Array: this,string,will,be,separated,into,parts,with,space,token,separator Size=1,11 Original number: -125.49 Integer part: -125 Decimal part: 489922 Date by DATENOW(TODAY) macro: 22/11/2021,18:41:20:13 Date: 22/11/2021 Time: 18:41:20:13
APL
<lang APL> '.',⍨¨ ','(≠⊆⊢)'abc,123,X' ⍝ [1] Do the split: ','(≠⊆⊢)'abc,123,X'; [2] append the periods: '.',⍨¨
abc. 123. X. ⍝ 3 strings (char vectors), each with a period at the end.
</lang>
AppleScript
<lang applescript>on run
intercalate(".", splitOn(",", "Hello,How,Are,You,Today"))
end run
-- splitOn :: String -> String -> [String]
on splitOn(strDelim, strMain)
set {dlm, my text item delimiters} to {my text item delimiters, strDelim}
set lstParts to text items of strMain
set my text item delimiters to dlm
return lstParts
end splitOn
-- intercalate :: String -> [String] -> String on intercalate(strText, lstText)
set {dlm, my text item delimiters} to {my text item delimiters, strText}
set strJoined to lstText as text
set my text item delimiters to dlm
return strJoined
end intercalate</lang>
- Output:
Hello.How.Are.You.Today
Or,
<lang AppleScript>set my text item delimiters to "," set tokens to the text items of "Hello,How,Are,You,Today"
set my text item delimiters to "." log tokens as text</lang>
- Output:
Hello.How.Are.You.Today
ARM Assembly
<lang ARM Assembly>
/* ARM assembly Raspberry PI */ /* program strTokenize.s */
/* Constantes */ .equ STDOUT, 1 @ Linux output console .equ EXIT, 1 @ Linux syscall .equ WRITE, 4 @ Linux syscall
.equ NBPOSTESECLAT, 20
/* Initialized data */ .data szMessFinal: .asciz "Words are : \n"
szString: .asciz "Hello,How,Are,You,Today" szMessError: .asciz "Error tokenize !!\n" szCarriageReturn: .asciz "\n"
/* UnInitialized data */ .bss
/* code section */ .text .global main main:
ldr r0,iAdrszString @ string address mov r1,#',' @ separator bl stTokenize cmp r0,#-1 @ error ? beq 99f mov r2,r0 @ table address ldr r0,iAdrszMessFinal @ display message bl affichageMess ldr r4,[r2] @ number of areas add r2,#4 @ first area mov r3,#0 @ loop counter
1: @ display loop
ldr r0,[r2,r3, lsl #2] @ address area bl affichageMess ldr r0,iAdrszCarriageReturn @ display carriage return bl affichageMess add r3,#1 @ counter + 1 cmp r3,r4 @ end ? blt 1b @ no -> loop
b 100f
99: @ display error message
ldr r0,iAdrszMessError bl affichageMess
100: @ standard end of the program
mov r0, #0 @ return code mov r7, #EXIT @ request to exit program svc 0 @ perform the system call
iAdrszString: .int szString iAdrszFinalString: .int szFinalString iAdrszMessFinal: .int szMessFinal iAdrszMessError: .int szMessError iAdrszCarriageReturn: .int szCarriageReturn /******************************************************************/ /* display text with size calculation */ /******************************************************************/ /* r0 contains the address of the message */ affichageMess:
push {r0,r1,r2,r7,lr} @ save registers
mov r2,#0 @ counter length */
1: @ loop length calculation
ldrb r1,[r0,r2] @ read octet start position + index
cmp r1,#0 @ if 0 its over
addne r2,r2,#1 @ else add 1 in the length
bne 1b @ and loop
@ so here r2 contains the length of the message
mov r1,r0 @ address message in r1
mov r0,#STDOUT @ code to write to the standard output Linux
mov r7, #WRITE @ code call system "write"
svc #0 @ call systeme
pop {r0,r1,r2,r7,lr} @ restaur des 2 registres
bx lr @ return
/*******************************************************************/ /* Separate string by separator into an array */ /* areas are store on the heap Linux */ /*******************************************************************/ /* r0 contains string address */ /* r1 contains separator character (, or . or : ) */ /* r0 returns table address with first item = number areas */ /* and other items contains pointer of each string */ stTokenize:
push {r1-r8,lr} @ save des registres
mov r6,r0
mov r8,r1 @ save separator
bl strLength @ length string for place reservation on the heap
mov r4,r0
ldr r5,iTailleTable
add r5,r0
and r5,#0xFFFFFFFC
add r5,#4 @ align word on the heap
@ place reservation on the heap
mov r0,#0 @ heap address
mov r7, #0x2D @ call system linux 'brk'
svc #0 @ call system
cmp r0,#-1 @ error call system
beq 100f
mov r3,r0 @ save address heap begin
add r0,r5 @ reserve r5 byte on the heap
mov r7, #0x2D @ call system linux 'brk'
svc #0
cmp r0,#-1
beq 100f
@ string copy on the heap
mov r0,r6
mov r1,r3
1: @ loop copy string
ldrb r2,[r0],#1 @ read one byte and increment pointer one byte strb r2,[r1],#1 @ store one byte and increment pointer one byte cmp r2,#0 @ end of string ? bne 1b @ no -> loop
add r4,r3 @ r4 contains address table begin mov r0,#0 str r0,[r4] str r3,[r4,#4] mov r2,#1 @ areas counter
2: @ loop load string character
ldrb r0,[r3] cmp r0,#0 beq 3f @ end string cmp r0,r8 @ separator ? addne r3,#1 @ no -> next location bne 2b @ and loop mov r0,#0 @ store zero final of string strb r0,[r3] add r3,#1 @ next character add r2,#1 @ areas counter + 1 str r3,[r4,r2, lsl #2] @ store address area in the table at index r2 b 2b @ and loop
3:
str r2,[r4] @ returns number areas mov r0,r4
100:
pop {r1-r8,lr}
bx lr
iTailleTable: .int 4 * NBPOSTESECLAT /***************************************************/ /* calcul size string */ /***************************************************/ /* r0 string address */ /* r0 returns size string */ strLength:
push {r1,r2,lr}
mov r1,#0 @ init counter
1:
ldrb r2,[r0,r1] @ load byte of string index r1 cmp r2,#0 @ end string ? addne r1,#1 @ no -> +1 counter bne 1b @ and loop
100:
mov r0,r1
pop {r1,r2,lr}
bx lr
</lang>
Arturo
<lang rebol>str: "Hello,How,Are,You,Today"
print join.with:"." split.by:"," str</lang>
- Output:
Hello.How.Are.You.Today
Astro
<lang python>let text = 'Hello,How,Are,You,Today' let tokens = text.split(||,||) print tokens.join(with: '.')</lang>
AutoHotkey
<lang AutoHotkey>string := "Hello,How,Are,You,Today" stringsplit, string, string, `, loop, % string0 { msgbox % string%A_Index% }</lang>
AWK
<lang awk>BEGIN {
s = "Hello,How,Are,You,Today"
split(s, arr, ",")
for(i=1; i < length(arr); i++) {
printf arr[i] "."
}
print
}</lang>
A more idiomatic way for AWK is
<lang awk>BEGIN { FS = "," } {
for(i=1; i <= NF; i++) printf $i "."; print ""
}</lang>
which "tokenize" each line of input and this is achieved by using "," as field separator
BASIC
Applesoft BASIC
<lang ApplesoftBasic>100 T$ = "HELLO,HOW,ARE,YOU,TODAY" 110 GOSUB 200"TOKENIZE 120 FOR I = 1 TO N 130 PRINT A$(I) "." ; 140 NEXT 150 PRINT 160 END
200 IF N = 0 THEN DIM A$(256) 210 N = 1 220 A$(N) = " 230 FOR TI = 1 TO LEN(T$) 240 C$ = MID$(T$, TI, 1) 250 T = C$ = "," 260 IF T THEN C$ = " 270 N = N + T 280 IF T THEN A$(N) = C$ 290 A$(N) = A$(N) + C$ 300 NEXT TI 310 RETURN</lang>
BaCon
BaCon includes extensive support for delimited strings. <lang bacon>OPTION BASE 1
string$ = "Hello,How,Are,You,Today"
' Tokenize a string into an array SPLIT string$ BY "," TO array$
' Print array elements with new delimiter PRINT COIL$(i, UBOUND(array$), array$[i], ".")
' Or simply replace the delimiter PRINT DELIM$(string$, ",", ".")</lang>
- Output:
prompt$ ./tokenize Hello.How.Are.You.Today Hello.How.Are.You.Today
BASIC256
<lang BASIC256>instring$ = "Hello,How,Are,You,Today"
tokens$ = explode(instring$,",") for i = 0 to tokens$[?]-1 print tokens$[i]; "."; next i end</lang>
BBC BASIC
<lang bbcbasic> INSTALL @lib$+"STRINGLIB"
text$ = "Hello,How,Are,You,Today"
n% = FN_split(text$, ",", array$())
FOR i% = 0 TO n%-1
PRINT array$(i%) "." ;
NEXT
PRINT</lang>
Commodore BASIC
Based on the AppleSoft BASIC version. <lang commodorebasic> 10 REM TOKENIZE A STRING ... ROSETTACODE.ORG 20 T$ = "HELLO,HOW,ARE,YOU,TODAY" 30 GOSUB 200, TOKENIZE 40 FOR I = 1 TO N 50 PRINT A$(I) "." ; 60 NEXT 70 PRINT 80 END 200 IF N = 0 THEN DIM A$(256) 210 N = 1 220 A$(N) = "" 230 FOR L = 1 TO LEN(T$) 240 C$ = MID$(T$, L, 1) 250 IF C$<>"," THEN A$(N) = A$(N) + C$: GOTO 270 260 N = N + 1 270 NEXT L 280 RETURN </lang>
FreeBASIC
<lang freebasic>sub tokenize( instring as string, tokens() as string, sep as string )
redim tokens(0 to 0) as string
dim as string*1 ch
dim as uinteger t=0
for i as uinteger = 1 to len(instring)
ch = mid(instring,i,1)
if ch = sep then
t = t + 1
redim preserve tokens(0 to t)
else
tokens(t) = tokens(t) + ch
end if
next i
return
end sub
dim as string instring = "Hello,How,Are,You,Today" redim as string tokens(-1) tokenize( instring, tokens(), "," ) for i as uinteger = 0 to ubound(tokens)
print tokens(i);".";
next i</lang>
Liberty BASIC
<lang lb>'Note that Liberty Basic's array usage can reach element #10 before having to DIM the array For i = 0 To 4
array$(i) = Word$("Hello,How,Are,You,Today", (i + 1), ",")
array$ = array$ + array$(i) + "."
Next i
Print Left$(array$, (Len(array$) - 1))</lang>
PowerBASIC
PowerBASIC has a few keywords that make parsing strings trivial: PARSE, PARSE$, and PARSECOUNT. (PARSE$, not shown here, is for extracting tokens one at a time, while PARSE extracts all tokens at once into an array. PARSECOUNT returns the number of tokens found.)
<lang powerbasic>FUNCTION PBMAIN () AS LONG
DIM parseMe AS STRING parseMe = "Hello,How,Are,You,Today"
REDIM parsed(PARSECOUNT(parseMe) - 1) AS STRING PARSE parseMe, parsed() 'comma is default delimiter
DIM L0 AS LONG, outP AS STRING
outP = parsed(0)
FOR L0 = 1 TO UBOUND(parsed) 'could reuse parsecount instead of ubound
outP = outP & "." & parsed(L0)
NEXT
MSGBOX outP
END FUNCTION</lang>
PureBasic
As described <lang PureBasic>NewList MyStrings.s()
For i=1 To 5
AddElement(MyStrings())
MyStrings()=StringField("Hello,How,Are,You,Today",i,",")
Next i
ForEach MyStrings()
Print(MyStrings()+".")
Next</lang>
Still, easier would be <lang PureBasic>Print(ReplaceString("Hello,How,Are,You,Today",",","."))</lang>
QBasic
<lang qbasic>DIM parseMe AS STRING parseMe = "Hello,How,Are,You,Today"
DIM tmpLng1 AS INTEGER, tmpLng2 AS INTEGER, parsedCount AS INTEGER tmpLng2 = 1 parsedCount = -1
'count number of tokens DO
tmpLng1 = INSTR(tmpLng2, parseMe, ",")
IF tmpLng1 THEN
parsedCount = parsedCount + 1
tmpLng2 = tmpLng1 + 1
ELSE
IF tmpLng2 < (LEN(parseMe) + 1) THEN parsedCount = parsedCount + 1
EXIT DO
END IF
LOOP
IF parsedCount > -1 THEN
REDIM parsed(parsedCount) AS STRING tmpLng2 = 1 parsedCount = -1
'parse
DO
tmpLng1 = INSTR(tmpLng2, parseMe, ",")
IF tmpLng1 THEN
parsedCount = parsedCount + 1
parsed(parsedCount) = MID$(parseMe, tmpLng2, tmpLng1 - tmpLng2)
tmpLng2 = tmpLng1 + 1
ELSE
IF tmpLng2 < (LEN(parseMe) + 1) THEN
parsedCount = parsedCount + 1
parsed(parsedCount) = MID$(parseMe, tmpLng2)
END IF
EXIT DO
END IF
LOOP
PRINT parsed(0);
FOR L0 = 1 TO parsedCount
PRINT "."; parsed(L0);
NEXT
END IF</lang>
Run BASIC
<lang runbasic>text$ = "Hello,How,Are,You,Today" FOR i = 1 to 5
textArray$(i) = word$(text$,i,",") print textArray$(i);" ";
NEXT</lang>
VBScript
One liner
<lang vb>WScript.Echo Join(Split("Hello,How,Are,You,Today", ","), ".")</lang>
In fact, the Visual Basic solution (below) could have done the same, as Join() is available.
Visual Basic
Unlike PowerBASIC, there is no need to know beforehand how many tokens are in the string -- Split automagically builds the array for you.
<lang vb>Sub Main()
Dim parseMe As String, parsed As Variant parseMe = "Hello,How,Are,You,Today"
parsed = Split(parseMe, ",")
Dim L0 As Long, outP As String
outP = parsed(0)
For L0 = 1 To UBound(parsed)
outP = outP & "." & parsed(L0)
Next
MsgBox outP
End Sub</lang>
Batch File
<lang dos>@echo off setlocal enabledelayedexpansion call :tokenize %1 res echo %res% goto :eof
- tokenize
set str=%~1
- loop
for %%i in (%str%) do set %2=!%2!.%%i set %2=!%2:~1! goto :eof</lang>
Demo
>tokenize.cmd "Hello,How,Are,You,Today" Hello.How.Are.You.Today
Bracmat
Solution that employs string pattern matching to spot the commas <lang bracmat>( "Hello,How,Are,You,Today":?String & :?ReverseList & whl
' ( @(!String:?element "," ?String) & !element !ReverseList:?ReverseList )
& !String:?List & whl
' ( !ReverseList:%?element ?ReverseList & (!element.!List):?List )
& out$!List )</lang> Solution that starts by evaluating the input and employs the circumstance that the comma is a list constructing binary operator and that the string does not contain any other characters that are interpreted as operators on evaluation. <lang bracmat>( get$("Hello,How,Are,You,Today",MEM):?CommaseparatedList & :?ReverseList & whl
' ( !CommaseparatedList:(?element,?CommaseparatedList) & !element !ReverseList:?ReverseList )
& !CommaseparatedList:?List & whl
' ( !ReverseList:%?element ?ReverseList & (!element.!List):?List )
& out$!List )</lang>
C
This example uses the strtok() function to separate the tokens. This function is destructive (replacing token separators with '\0'), so we have to make a copy of the string (using strdup()) before tokenizing. strdup() is not part of ANSI C, but is available on most platforms. It can easily be implemented with a combination of strlen(), malloc(), and strcpy().
<lang c>#include<string.h>
- include<stdio.h>
- include<stdlib.h>
int main(void) { char *a[5]; const char *s="Hello,How,Are,You,Today"; int n=0, nn;
char *ds=strdup(s);
a[n]=strtok(ds, ","); while(a[n] && n<4) a[++n]=strtok(NULL, ",");
for(nn=0; nn<=n; ++nn) printf("%s.", a[nn]); putchar('\n');
free(ds);
return 0; }</lang>
Another way to accomplish the task without the built-in string functions is to temporarily modify the separator character. This method does not need any additional memory, but requires the input string to be writeable. <lang c>#include<stdio.h>
typedef void (*callbackfunc)(const char *);
void doprint(const char *s) { printf("%s.", s); }
void tokenize(char *s, char delim, callbackfunc cb) { char *olds = s; char olddelim = delim; while(olddelim && *s) { while(*s && (delim != *s)) s++; *s ^= olddelim = *s; // olddelim = *s; *s = 0; cb(olds); *s++ ^= olddelim; // *s = olddelim; s++; olds = s; } }
int main(void) {
char array[] = "Hello,How,Are,You,Today";
tokenize(array, ',', doprint); return 0; }</lang>
C#
<lang csharp>string str = "Hello,How,Are,You,Today"; // or Regex.Split ( "Hello,How,Are,You,Today", "," ); // (Regex is in System.Text.RegularExpressions namespace) string[] strings = str.Split(','); Console.WriteLine(String.Join(".", strings)); </lang>
C++
std::getline() is typically used to tokenize strings on a single-character delimiter
<lang cpp>#include <string>
- include <sstream>
- include <vector>
- include <iterator>
- include <iostream>
- include <algorithm>
int main() {
std::string s = "Hello,How,Are,You,Today";
std::vector<std::string> v;
std::istringstream buf(s);
for(std::string token; getline(buf, token, ','); )
v.push_back(token);
copy(v.begin(), v.end(), std::ostream_iterator<std::string>(std::cout, "."));
std::cout << '\n';
}</lang>
C++ allows the user to redefine what is considered whitespace. If the delimiter is whitespace, tokenization becomes effortless.
<lang cpp>#include <string>
- include <locale>
- include <sstream>
- include <vector>
- include <iterator>
- include <iostream>
- include <algorithm>
struct comma_ws : std::ctype<char> {
static const mask* make_table() {
static std::vector<mask> v(classic_table(), classic_table() + table_size);
v[','] |= space; // comma will be classified as whitespace
return &v[0];
}
comma_ws(std::size_t refs = 0) : ctype<char>(make_table(), false, refs) {}
}; int main() {
std::string s = "Hello,How,Are,You,Today"; std::istringstream buf(s); buf.imbue(std::locale(buf.getloc(), new comma_ws)); std::istream_iterator<std::string> beg(buf), end; std::vector<std::string> v(beg, end); copy(v.begin(), v.end(), std::ostream_iterator<std::string>(std::cout, ".")); std::cout << '\n';
}</lang>
The boost library has multiple options for easy tokenization.
<lang cpp>#include <string>
- include <vector>
- include <iterator>
- include <algorithm>
- include <iostream>
- include <boost/tokenizer.hpp>
int main() {
std::string s = "Hello,How,Are,You,Today"; boost::tokenizer<> tok(s); std::vector<std::string> v(tok.begin(), tok.end()); copy(v.begin(), v.end(), std::ostream_iterator<std::string>(std::cout, ".")) std::cout << '\n';
}</lang>
Ceylon
<lang ceylon>shared void tokenizeAString() { value input = "Hello,How,Are,You,Today"; value tokens = input.split(','.equals); print(".".join(tokens)); }</lang>
Clojure
Using native Clojure functions and Java Interop: <lang clojure>(apply str (interpose "." (.split #"," "Hello,How,Are,You,Today")))</lang>
Using the clojure.string library: <lang clojure>(clojure.string/join "." (clojure.string/split "Hello,How,Are,You,Today" #","))</lang>
CLU
<lang clu>% This iterator splits the string on a given character, % and returns each substring in order. tokenize = iter (s: string, c: char) yields (string)
while ~string$empty(s) do
next: int := string$indexc(c, s)
if next = 0 then
yield(s)
break
else
yield(string$substr(s, 1, next-1))
s := string$rest(s, next+1)
end
end
end tokenize
start_up = proc ()
po: stream := stream$primary_output()
str: string := "Hello,How,Are,You,Today"
for part: string in tokenize(str, ',') do
stream$putl(po, part || ".")
end
end start_up</lang>
- Output:
Hello. How. Are. You. Today.
COBOL
This can be made to handle more complex cases; UNSTRING allows multiple delimiters, capture of which delimiter was used for each field, a POINTER for starting position (set on ending), along with match TALLYING.
<lang COBOL>
identification division.
program-id. tokenize.
environment division.
configuration section.
repository.
function all intrinsic.
data division.
working-storage section.
01 period constant as ".".
01 cmma constant as ",".
01 start-with.
05 value "Hello,How,Are,You,Today".
01 items.
05 item pic x(6) occurs 5 times.
procedure division.
tokenize-main.
unstring start-with delimited by cmma
into item(1) item(2) item(3) item(4) item(5)
display trim(item(1)) period trim(item(2)) period
trim(item(3)) period trim(item(4)) period
trim(item(5))
goback.
end program tokenize.
</lang>
- Output:
prompt$ cobc -xj tokenize.cob Hello.How.Are.You.Today
CoffeeScript
<lang coffeescript> arr = "Hello,How,Are,You,Today".split "," console.log arr.join "." </lang>
ColdFusion
Classic tag based CFML
<lang cfm> <cfoutput>
<cfset wordListTag = "Hello,How,Are,You,Today"> #Replace( wordListTag, ",", ".", "all" )#
</cfoutput> </lang>
- Output:
"Hello.How.Are.You.Today"
Script Based CFML
<lang cfm><cfscript>
wordList = "Hello,How,Are,You,Today"; splitList = replace( wordList, ",", ".", "all" ); writeOutput( splitList );
</cfscript></lang>
- Output:
"Hello.How.Are.You.Today"
Common Lisp
There are libraries out there that handle splitting (e.g., SPLIT-SEQUENCE, and the more-general CL-PPCRE), but this is a simple one-off, too. When the words are written with write-with-periods, there is no final period after the last word.
<lang lisp>(defun comma-split (string)
(loop for start = 0 then (1+ finish)
for finish = (position #\, string :start start)
collecting (subseq string start finish)
until (null finish)))
(defun write-with-periods (strings)
(format t "~{~A~^.~}" strings))</lang>
Cowgol
<lang cowgol>include "cowgol.coh"; include "strings.coh";
- Tokenize a string. Note: the string is modified in place.
sub tokenize(sep: uint8, str: [uint8], out: uint8): (length: intptr) is
length := 0;
loop
[out] := str;
out := @next out;
length := length + 1;
while [str] != 0 and [str] != sep loop
str := @next str;
end loop;
if [str] == sep then
[str] := 0;
str := @next str;
else
break;
end if;
end loop;
end sub;
- The string
var string: [uint8] := "Hello,How,Are,You,Today";
- Make a mutable copy
var buf: uint8[64]; CopyString(string, &buf[0]);
- Tokenize the copy
var parts: [uint8][64]; var length := tokenize(',', &buf[0], &parts[0]) as @indexof parts;
- Print each string
var i: @indexof parts := 0; while i < length loop
print(parts[i]);
print(".\n");
i := i + 1;
end loop;</lang>
- Output:
Hello. How. Are. You. Today.
Crystal
<lang crystal>puts "Hello,How,Are,You,Today".split(',').join('.')</lang>
- Output:
Hello.How.Are.You.Today
D
<lang d>void main() {
import std.stdio, std.string;
"Hello,How,Are,You,Today".split(',').join('.').writeln;
}</lang>
- Output:
Hello.How.Are.You.Today
Delphi
Using String.split
<lang Delphi> program Tokenize_a_string;
{$APPTYPE CONSOLE}
uses
System.SysUtils;
var
Words: TArray<string>;
begin
Words := 'Hello,How,Are,You,Today'.Split([',']); Writeln(string.Join(#10, Words));
Readln;
end.
</lang>
Using TStringList
<lang Delphi> program TokenizeString;
{$APPTYPE CONSOLE}
uses
Classes;
var
tmp: TStringList; i: Integer;
begin
// Instantiate TStringList class
tmp := TStringList.Create;
try
{ Use the TStringList's CommaText property to get/set
all the strings in a single comma-delimited string }
tmp.CommaText := 'Hello,How,Are,You,Today';
{ Now loop through the TStringList and display each
token on the console }
for i := 0 to Pred(tmp.Count) do
Writeln(tmp[i]);
finally tmp.Free; end;
Readln;
end. </lang>
The result is:
<lang Delphi> Hello How Are You Today </lang>
Dyalect
<lang dyalect>var str = "Hello,How,Are,You,Today" var strings = str.split(',') print(values: strings, separator: ".")</lang>
- Output:
Hello.How.Are.You.Today
Déjà Vu
<lang dejavu>!print join "." split "Hello,How,Are,You,Today" ","</lang>
- Output:
Hello.How.Are.You.Today
E
<lang e>".".rjoin("Hello,How,Are,You,Today".split(","))</lang>
Elena
ELENA 4.x: <lang elena>import system'routines; import extensions;
public program() {
var string := "Hello,How,Are,You,Today";
string.splitBy:",".forEach:(s)
{
console.print(s,".")
}
}</lang>
Elixir
<lang elixir> tokens = String.split("Hello,How,Are,You,Today", ",") IO.puts Enum.join(tokens, ".") </lang>
Erlang
<lang erlang>-module(tok). -export([start/0]).
start() ->
Lst = string:tokens("Hello,How,Are,You,Today",","),
io:fwrite("~s~n", [string:join(Lst,".")]),
ok.</lang>
Euphoria
<lang euphoria>function split(sequence s, integer c)
sequence out
integer first, delim
out = {}
first = 1
while first<=length(s) do
delim = find_from(c,s,first)
if delim = 0 then
delim = length(s)+1
end if
out = append(out,s[first..delim-1])
first = delim + 1
end while
return out
end function
sequence s s = split("Hello,How,Are,You,Today", ',')
for i = 1 to length(s) do
puts(1, s[i] & ',')
end for</lang>
F#
<lang fsharp>System.String.Join(".", "Hello,How,Are,You,Today".Split(','))</lang>
Factor
<lang factor>"Hello,How,Are,You,Today" "," split "." join print</lang>
Falcon
VBA/Python programmer's approach to this solution, not sure if it's the most falconic way <lang falcon> /* created by Aykayayciti Earl Lamont Montgomery April 9th, 2018 */
a = [] a = strSplit("Hello,How,Are,You,Today", ",") index = 0 start = 0 b = "" for index in [ start : len(a)-1 : 1 ] b = b + a[index] + "." end
> b </lang>
- Output:
Hello.How.Are.You. [Finished in 0.2s]
Fantom
A string can be split on a given character, returning a list of the intervening strings.
<lang fantom> class Main {
public static Void main ()
{
str := "Hello,How,Are,You,Today"
words := str.split(',')
words.each |Str word|
{
echo ("${word}. ")
}
}
} </lang>
Forth
There is no standard string split routine, but it is easily written. The results are saved temporarily to the dictionary.
<lang forth>: split ( str len separator len -- tokens count )
here >r 2swap begin 2dup 2, \ save this token ( addr len ) 2over search \ find next separator while dup negate here 2 cells - +! \ adjust last token length 2over nip /string \ start next search past separator repeat 2drop 2drop r> here over - ( tokens length ) dup negate allot \ reclaim dictionary 2 cells / ; \ turn byte length into token count
- .tokens ( tokens count -- )
1 ?do dup 2@ type ." ." cell+ cell+ loop 2@ type ;
s" Hello,How,Are,You,Today" s" ," split .tokens \ Hello.How.Are.You.Today</lang>
Fortran
<lang fortran>PROGRAM Example
CHARACTER(23) :: str = "Hello,How,Are,You,Today" CHARACTER(5) :: word(5) INTEGER :: pos1 = 1, pos2, n = 0, i
DO
pos2 = INDEX(str(pos1:), ",")
IF (pos2 == 0) THEN
n = n + 1
word(n) = str(pos1:)
EXIT
END IF
n = n + 1
word(n) = str(pos1:pos1+pos2-2)
pos1 = pos2+pos1
END DO
DO i = 1, n WRITE(*,"(2A)", ADVANCE="NO") TRIM(word(i)), "." END DO
END PROGRAM Example</lang>
Frink
<lang frink> println[join[".", split[",", "Hello,How,Are,You,Today"]]] </lang>
Gambas
Click this link to run this code <lang gambas>Public Sub Main() Dim sString As String[] = Split("Hello,How,Are,You,Today")
Print sString.Join(".")
End</lang> Output:
Hello.How.Are.You.Today
GAP
<lang gap>SplitString("Hello,How,Are,You,Today", ",");
- [ "Hello", "How", "Are", "You", "Today" ]
JoinStringsWithSeparator(last, ".");
- "Hello.How.Are.You.Today"</lang>
Genie
<lang genie>[indent=4]
init
str:string = "Hello,How,Are,You,Today"
words:array of string[] = str.split(",")
joined:string = string.joinv(".", words)
print joined</lang>
- Output:
prompt$ valac tokenize.gs prompt$ ./tokenize Hello.How.Are.You.Today
Go
<lang go>package main
import (
"fmt" "strings"
)
func main() {
s := "Hello,How,Are,You,Today" fmt.Println(strings.Join(strings.Split(s, ","), "."))
}</lang>
Groovy
<lang groovy>println 'Hello,How,Are,You,Today'.split(',').join('.')</lang>
Haskell
Using Data.Text
<lang haskell>{-# OPTIONS_GHC -XOverloadedStrings #-} import Data.Text (splitOn,intercalate) import qualified Data.Text.IO as T (putStrLn)
main = T.putStrLn . intercalate "." $ splitOn "," "Hello,How,Are,You,Today"</lang>
Output: Hello.How.Are.You.Today
Alternate Solution
The necessary operations are unfortunately not in the standard library (yet), but simple to write:
<lang haskell>splitBy :: (a -> Bool) -> [a] -> a splitBy _ [] = [] splitBy f list = first : splitBy f (dropWhile f rest) where
(first, rest) = break f list
splitRegex :: Regex -> String -> [String]
joinWith :: [a] -> a -> [a] joinWith d xs = concat $ List.intersperse d xs -- "concat $ intersperse" can be replaced with "intercalate" from the Data.List in GHC 6.8 and later
putStrLn $ joinWith "." $ splitBy (== ',') $ "Hello,How,Are,You,Today"
-- using regular expression to split: import Text.Regex putStrLn $ joinWith "." $ splitRegex (mkRegex ",") $ "Hello,How,Are,You,Today"</lang>
Tokenizing can also be realized by using unfoldr and break: <lang Haskell>*Main> mapM_ putStrLn $ takeWhile (not.null) $ unfoldr (Just . second(drop 1). break (==',')) "Hello,How,Are,You,Today" Hello How Are You Today</lang>
- You need to import the modules Data.List and Control.Arrow
As special cases, splitting / joining by white space and by newlines are provided by the Prelude functions words / unwords and lines / unlines, respectively.
HicEst
<lang hicest>CHARACTER string="Hello,How,Are,You,Today", list
nWords = INDEX(string, ',', 256) + 1 maxWordLength = LEN(string) - 2*nWords ALLOCATE(list, nWords*maxWordLength)
DO i = 1, nWords
EDIT(Text=string, SePaRators=',', item=i, WordEnd, CoPyto=CHAR(i, maxWordLength, list))
ENDDO
DO i = 1, nWords
WRITE(APPend) TRIM(CHAR(i, maxWordLength, list)), '.'
ENDDO</lang>
Icon and Unicon
<lang icon>procedure main()
A := []
"Hello,How,Are,You,Today" ? {
while put(A, 1(tab(upto(',')),=","))
put(A,tab(0))
}
every writes(!A,".")
write()
end</lang>
- Output:
->ss Hello.How.Are.You.Today. ->
A Unicon-specific solution is: <lang unicon>import util
procedure main()
A := stringToList("Hello,How,Are,You,Today", ',')
every writes(!A,".")
write()
end</lang>
One wonders what the expected output should be with the input string ",,,,".
Io
<lang io>"Hello,How,Are,You,Today" split(",") join(".") println</lang>
J
<lang j> s=: 'Hello,How,Are,You,Today'
] t=: <;._1 ',',s
+-----+---+---+---+-----+ |Hello|How|Are|You|Today| +-----+---+---+---+-----+
; t,&.>'.'
Hello.How.Are.You.Today.
'.' (I.','=s)}s NB. two steps combined
Hello.How.Are.You.Today</lang>
Alternatively using the system library/script strings <lang j> require 'strings'
',' splitstring s
+-----+---+---+---+-----+ |Hello|How|Are|You|Today| +-----+---+---+---+-----+
'.' joinstring ',' splitstring s
Hello.How.Are.You.Today</lang>
splitstring and joinstring also work with longer "delimiters": <lang j> '"'([ ,~ ,) '","' joinstring ',' splitstring s "Hello","How","Are","You","Today"</lang>
But, of course, this could be solved with simple string replacement:
<lang J> rplc&',.' s Hello.How.Are.You.Today</lang>
The task asks us to Separate the string "Hello,How,Are,You,Today" by commas into an array (or list) so that each element of it stores a different word. but for many purposes the original string is an adequate data structure. Note also that given a string, a list of "word start" indices and "word length" integers can be logically equivalent to having an "array of words" -- and, depending on implementation details may be a superior or inferior choice to some other representation. But, in current definition of this task, the concept of "word length" plays no useful role.
Note also that J provides several built-in concepts of parsing: split on leading delimiter, split on trailing delimiter, split J language words. Also, it's sometimes more efficient to append to a string than to prepend to it. So a common practice for parsing on an embedded delimiter is to append a copy of the delimiter to the string and then use the appended result:
<lang J> fn;._2 string,','</lang>
Here fn is applied to each ',' delimited substring and the results are assembled into an array.
Or, factoring out the names: <lang J> fn ((;._2)(@(,&','))) string</lang>
Java
There are multiple ways to tokenize a String in Java.
The first is by splitting the String into an array of Strings. The separator is actually a regular expression so you could do very powerful things with this, but make sure to escape any characters with special meaning in regex.
<lang java5>String toTokenize = "Hello,How,Are,You,Today"; System.out.println(String.join(".", toTokenize.split(",")));</lang>
<lang java5>String toTokenize = "Hello,How,Are,You,Today";
String words[] = toTokenize.split(",");//splits on one comma, multiple commas yield multiple splits
//toTokenize.split(",+") if you want to ignore empty fields
for(int i=0; i<words.length; i++) {
System.out.print(words[i] + ".");
}</lang>
The other way is to use StringTokenizer. It will skip any empty tokens. So if two commas are given in line, there will be an empty string in the array given by the split function, but no empty string with the StringTokenizer object. This method takes more code to use, but allows you to get tokens incrementally instead of all at once.
<lang java5>String toTokenize = "Hello,How,Are,You,Today";
StringTokenizer tokenizer = new StringTokenizer(toTokenize, ","); while(tokenizer.hasMoreTokens()) {
System.out.print(tokenizer.nextToken() + ".");
}</lang>
JavaScript
<lang javascript>alert( "Hello,How,Are,You,Today".split(",").join(".") );</lang>
jq
<lang jq>split(",") | join(".")</lang>Example:<lang sh>$ jq -r 'split(",") | join(".")' "Hello,How,Are,You,Today" Hello.How.Are.You.Today</lang>
Jsish
Being in the ECMAScript family, Jsi is blessed with many easy to use character, string and array manipulation routines.
<lang javascript>puts('Hello,How,Are,You,Today'.split(',').join('.'))</lang>
- Output:
Hello.How.Are.You.Today
Julia
<lang Julia> s = "Hello,How,Are,You,Today" a = split(s, ",") t = join(a, ".")
println("The string \"", s, "\"") println("Splits into ", a) println("Reconstitutes to \"", t, "\"") </lang>
- Output:
The string "Hello,How,Are,You,Today"
Splits into SubString{ASCIIString}["Hello","How","Are","You","Today"]
Reconstitutes to "Hello.How.Are.You.Today"
K
<lang K>words: "," \: "Hello,How,Are,You,Today" "." /: words</lang>
- Output:
"Hello.How.Are.You.Today"
Klingphix
<lang Klingphix>( "Hello,How,Are,You,Today" "," ) split len [ get print "." print ] for
nl "End " input</lang>
- Output:
Hello.How.Are.You.Today. End
Kotlin
<lang scala>fun main(args: Array<String>) {
val input = "Hello,How,Are,You,Today"
println(input.split(',').joinToString("."))
}</lang>
- Output:
Hello.How.Are.You.Today
Ksh
<lang ksh>
- !/bin/ksh
- Tokenize a string
- # Variables:
string="Hello,How,Are,You,Today" inputdelim=\, # a comma outputdelim=\. # a period
- # Functions:
- # Function _tokenize(str, indelim, outdelim)
function _tokenize { typeset _str ; _str="$1" typeset _ind ; _ind="$2" typeset _outd ; _outd="$3"
while [[ ${_str} != ${_str/${_ind}/${_outd}} ]]; do _str=${_str/${_ind}/${_outd}} done
echo "${_str}" }
######
- main #
######
_tokenize "${string}" "${inputdelim}" "${outputdelim}"</lang>
- Output:
Hello.How.Are.You.Today
LabVIEW
To tokenize the string, we use the Search/Split String function to split the string by its first comma. Add the beginning (up to, but not including the comma) to the end of the array, remove the first comma from the rest of the string, and pass it back through the shift register to the loop's next iteration. This is repeated until the string is empty. Printing is a simple matter of concatenation.
This image is a VI Snippet, an executable image of LabVIEW code. The LabVIEW version is shown on the top-right hand corner. You can download it, then drag-and-drop it onto the LabVIEW block diagram from a file browser, and it will appear as runnable, editable code.
Lambdatalk
<lang scheme> {S.replace , by . in Hello,How,Are,You,Today}. -> Hello.How.Are.You.Today. </lang>
Lang5
<lang lang5>'Hello,How,Are,You,Today ', split '. join .</lang>
LDPL
<lang ldpl> DATA: explode/words is text vector explode/index is number explode/string is text explode/length is number explode/stringlength is number explode/current-token is text explode/char is text explode/separator is text i is number
PROCEDURE:
- Ask for a sentence
display "Enter a sentence: " accept explode/string
- Declare explode Subprocedure
- Splits a text into a text vector by a certain delimiter
- Input parameters:
- - explode/string: the string to explode (destroyed)
- - explode/separator: the character used to separate the string (preserved)
- Output parameters:
- - explode/words: vector of splitted words
- - explode/length: length of explode/words
sub-procedure explode
join explode/string and explode/separator in explode/string
store length of explode/string in explode/stringlength
store 0 in explode/index
store 0 in explode/length
store "" in explode/current-token
while explode/index is less than explode/stringlength do
get character at explode/index from explode/string in explode/char
if explode/char is equal to explode/separator then
store explode/current-token in explode/words:explode/length
add explode/length and 1 in explode/length
store "" in explode/current-token
else
join explode/current-token and explode/char in explode/current-token
end if
add explode/index and 1 in explode/index
repeat
subtract 1 from explode/length in explode/length
end sub-procedure
- Separate the entered string
store " " in explode/separator call sub-procedure explode while i is less than or equal to explode/length do
display explode/words:i crlf add 1 and i in i
repeat </lang>
LFE
<lang lisp> > (set split (string:tokens "Hello,How,Are,You,Today" ",")) ("Hello" "How" "Are" "You" "Today") > (string:join split ".") "Hello.How.Are.You.Today" </lang>
Lingo
<lang lingo>input = "Hello,How,Are,You,Today" _player.itemDelimiter = "," output = "" repeat with i = 1 to input.item.count
put input.item[i]&"." after output
end repeat delete the last char of output put output -- "Hello.How.Are.You.Today"</lang>
Logo
<lang logo>to split :str :sep
output parse map [ifelse ? = :sep ["| |] [?]] :str
end</lang>
This form is more robust, doing the right thing if there are embedded spaces. <lang logo>to split :str :by [:acc []] [:w "||]
if empty? :str [output lput :w :acc] ifelse equal? first :str :by ~ [output (split butfirst :str :by lput :w :acc)] ~ [output (split butfirst :str :by :acc lput first :str :w)]
end</lang>
<lang logo>? show split "Hello,How,Are,You,Today ", [Hello How Are You Today]</lang>
Logtalk
Using Logtalk built-in support for Definite Clause Grammars (DCGs) and representing the strings as atoms for readbility: <lang logtalk>
- - object(spliting).
:- public(convert/2). :- mode(convert(+atom, -atom), one).
convert(StringIn, StringOut) :-
atom_chars(StringIn, CharactersIn),
phrase(split(',', Tokens), CharactersIn),
phrase(split('.', Tokens), CharactersOut),
atom_chars(StringOut, CharactersOut).
split(Separator, [t([Character| Characters])| Tokens]) -->
[Character], {Character \== Separator}, split(Separator, [t(Characters)| Tokens]).
split(Separator, [t([])| Tokens]) -->
[Separator], split(Separator, Tokens).
split(_, [t([])]) -->
[].
% the look-ahead in the next rule prevents adding a spurious separator at the end
split(_, []), [Character] -->
[Character].
- - end_object.
</lang>
- Output:
| ?- spliting::convert('Hello,How,Are,You,Today', Converted).
Converted = 'Hello.How.Are.You.Today'
yes
Lua
Split function callously stolen from the lua-users wiki <lang Lua>function string:split (sep)
local sep, fields = sep or ":", {}
local pattern = string.format("([^%s]+)", sep)
self:gsub(pattern, function(c) fields[#fields+1] = c end)
return fields
end
local str = "Hello,How,Are,You,Today" print(table.concat(str:split(","), "."))</lang>
- Output:
Hello.How.Are.You.Today
M2000 Interpreter
<lang M2000 Interpreter> Module CheckIt { Function Tokenize$(s){ \\ letter$ pop a string from stack of values \\ shift 2 swap top two values on stack of values fold1=lambda m=1 ->{ shift 2 :if m=1 then m=0:drop: push letter$ else push letter$+"."+letter$ } =s#fold$(fold1) } Print Tokenize$(piece$("Hello,How,Are,You,Today",",")) ="Hello.How.Are.You.Today" ' true } Checkit </lang>
M4
<lang M4>define(`s',`Hello,How,Are,You,Today') define(`set',`define(`$1[$2]',`$3')') define(`get',`defn($1[$2])') define(`n',0) define(`fill',
`set(a,n,$1)`'define(`n',incr(n))`'ifelse(eval($#>1),1,`fill(shift($@))')')
fill(s) define(`j',0) define(`show',
`ifelse(eval(j<n),1,`get(a,j).`'define(`j',incr(j))`'show')')
show</lang>
- Output:
Hello.How.Are.You.Today.
Maple
<lang Maple>StringTools:-Join(StringTools:-Split("Hello,How,Are,You,Today", ","),".");</lang>
- Output:
"Hello.How.Are.You.Today"
Mathematica/Wolfram Language
<lang Mathematica>StringJoin@StringSplit["Hello,How,Are,You,Today", "," -> "."]</lang>
MATLAB / Octave
<lang Matlab> s=strsplit('Hello,How,Are,You,Today',',') fprintf(1,'%s.',s{:}) </lang>
- Output:
Hello.How.Are.You.Today.
Maxima
<lang Maxima>l: split("Hello,How,Are,You,Today", ",")$ printf(true, "~{~a~^.~}~%", l)$</lang>
MAXScript
<lang maxscript>output = "" for word in (filterString "Hello,How,Are,You,Today" ",") do (
output += (word + ".")
) format "%\n" output</lang>
Mercury
<lang>
- - module string_tokenize.
- - interface.
- - import_module io.
- - pred main(io::di, io::uo) is det.
- - implementation.
- - import_module list, string.
main(!IO) :-
Tokens = string.split_at_char((','), "Hello,How,Are,You,Today"),
io.write_list(Tokens, ".", io.write_string, !IO),
io.nl(!IO).</lang>
min
<lang min>"Hello,How,Are,You,Today" "," split "." join print</lang>
MiniScript
<lang MiniScript>tokens = "Hello,How,Are,You,Today".split(",") print tokens.join(".")</lang>
MMIX
<lang mmix>sep IS ',' EOS IS 0 NL IS 10
// main registers p IS $255 tp GREG c GREG t GREG
LOC Data_Segment GREG @ Text BYTE "Hello,How,Are,You,Today",EOS token BYTE 0 eot IS @+255
LOC #100 % main () { Main LDA p,Text % LDA tp,token % initialize pointers 2H LDBU c,p % DO get char BZ c,5F % break if char == EOS CMP t,c,sep % if char != sep then PBNZ t,3F % store char SET t,NL % terminate token with NL,EOS STBU t,tp SET t,EOS INCL tp,1 STBU t,tp JMP 4F % continue
3H STBU c,tp % store char 4H INCL tp,1 % update pointers INCL p,1 JMP 2B % LOOP
5H SET t,NL % terminate last token and buffer STBU t,tp SET t,EOS INCL tp,1 STBU t,tp % next part is not really necessary % program runs only once % INCL tp,1 % terminate buffer % STBU t,tp
LDA tp,token % reset token pointer % REPEAT 2H ADD p,tp,0 % start of token TRAP 0,Fputs,StdOut % output token ADD tp,tp,p INCL tp,1 % step to next token LDBU t,tp PBNZ t,2B % UNTIL EOB(uffer) TRAP 0,Halt,0</lang>
- Output:
~/MIX/MMIX/Progs> mmix tokenizing Hello How Are You Today
Modula-3
<lang modula3>MODULE Tokenize EXPORTS Main;
IMPORT IO, TextConv;
TYPE Texts = REF ARRAY OF TEXT;
VAR tokens: Texts;
string := "Hello,How,Are,You,Today";
sep := SET OF CHAR {','};
BEGIN
tokens := NEW(Texts, TextConv.ExplodedSize(string, sep));
TextConv.Explode(string, tokens^, sep);
FOR i := FIRST(tokens^) TO LAST(tokens^) DO
IO.Put(tokens[i] & ".");
END;
IO.Put("\n");
END Tokenize.</lang>
MUMPS
<lang MUMPS>TOKENS
NEW I,J,INP SET INP="Hello,how,are,you,today" NEW I FOR I=1:1:$LENGTH(INP,",") SET INP(I)=$PIECE(INP,",",I) NEW J FOR J=1:1:I WRITE INP(J) WRITE:J'=I "." KILL I,J,INP // Kill is optional. "New" variables automatically are killed on "Quit" QUIT</lang>
In use:
USER>D TOKENS^ROSETTA Hello.how.are.you.today
Nanoquery
<lang nanoquery>for word in "Hello,How,Are,You,Today".split(",")
print word + "."
end</lang>
- Output:
Hello.How.Are.You.Today.
Nemerle
<lang Nemerle>using System; using System.Console; using Nemerle.Utility.NString;
module Tokenize {
Main() : void
{
def cswords = "Hello,How,Are,You,Today";
WriteLine(Concat(".", $[s | s in cswords.Split(',')]));
// Split() produces an array while Concat() consumes a list
// a quick in place list comprehension takes care of that
}
}</lang>
NetRexx
<lang NetRexx>/*NetRexx program *****************************************************
- 20.08.2012 Walter Pachl derived from REXX Version 3
- /
sss='Hello,How,Are,You,Today'
Say 'input string='sss
Say
Say 'Words in the string:'
ss =sss.translate(' ',',')
Loop i=1 To ss.words()
Say ss.word(i)'.'
End
Say 'End-of-list.'</lang>
Output as in REXX version
NewLISP
<lang NewLISP>(print (join (parse "Hello,How,Are,You,Today" ",") "."))</lang>
Nial
Example for Q'Nial7, using set "nodecor and set "diagram switches for better display of the array structure:
Define Array with input string:
<lang Nial> s := 'Hello,How,Are,You,Today' +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |H|e|l|l|o|,|H|o|w|,|A|r|e|,|Y|o|u|,|T|o|d|a|y| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</lang>
Split string at the commas:
<lang Nial> t := s eachall = `, cut s +-----------+-------+-------+-------+-----------+ |+-+-+-+-+-+|+-+-+-+|+-+-+-+|+-+-+-+|+-+-+-+-+-+| ||H|e|l|l|o|||H|o|w|||A|r|e|||Y|o|u|||T|o|d|a|y|| |+-+-+-+-+-+|+-+-+-+|+-+-+-+|+-+-+-+|+-+-+-+-+-+| +-----------+-------+-------+-------+-----------+</lang>
Join string with . and remove last .
<lang Nial> u := front content (cart t `.) +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |H|e|l|l|o|.|H|o|w|.|A|r|e|.|Y|o|u|.|T|o|d|a|y| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</lang>
Less cluttered display, using set "sketch;set "nodecor display switches.
<lang Nial> s:='Hello,How,Are,You,Today' Hello,How,Are,You,Today
t:= s eachall = `, cut s
+-----+---+---+---+-----+ |Hello|How|Are|You|Today| +-----+---+---+---+-----+
u:=front content (cart t `.)
Hello.How.Are.You.Today</lang>
Nim
<lang nim>import strutils
let text = "Hello,How,Are,You,Today" let tokens = text.split(',') echo tokens.join(".")</lang>
- Output:
Hello.How.Are.You.Today
Objeck
<lang objeck> class Parse {
function : Main(args : String[]) ~ Nil {
tokens := "Hello,How,Are,You,Today"->Split(",");
each(i : tokens) {
tokens[i]->PrintLine();
};
}
}</lang>
Objective-C
<lang objc>NSString *text = @"Hello,How,Are,You,Today"; NSArray *tokens = [text componentsSeparatedByString:@","]; NSString *result = [tokens componentsJoinedByString:@"."]; NSLog(result);</lang>
OCaml
To split on a single-character separator: <lang ocaml>let words = String.split_on_char ',' "Hello,How,Are,You,Today" in String.concat "." words </lang>
The function split_on_char has been introduced in OCaml 4.04. In previous versions, it could be implemented by:
<lang ocaml>let split_on_char sep s =
let r = ref [] in
let j = ref (String.length s) in
for i = String.length s - 1 downto 0 do
if s.[i] = sep then begin
r := String.sub s (i + 1) (!j - i - 1) :: !r;
j := i
end
done;
String.sub s 0 !j :: !r</lang>
Oforth
<lang Oforth>"Hello,How,Are,You,Today" wordsWith(',') println</lang>
- Output:
[Hello, How, Are, You, Today]
ooRexx
<lang ooRexx>text='Hello,How,Are,You,Today' do while text \=
parse var text word1 ',' text call charout 'STDOUT:',word1'.'
end</lang>
- Output:
Hello.How.Are.You.Today.
OpenEdge/Progress
<lang progress>FUNCTION tokenizeString RETURNS CHAR (
i_c AS CHAR
):
DEF VAR ii AS INT. DEF VAR carray AS CHAR EXTENT. DEF VAR cresult AS CHAR.
EXTENT( carray ) = NUM-ENTRIES( i_c ).
DO ii = 1 TO NUM-ENTRIES( i_c ):
carray[ ii ] = ENTRY( ii, i_c ).
END.
DO ii = 1 TO EXTENT( carray ).
cresult = cresult + "." + carray[ ii ].
END.
RETURN SUBSTRING( cresult, 2 ).
END FUNCTION. /* tokenizeString */
MESSAGE
tokenizeString( "Hello,How,Are,You,Today" )
VIEW-AS ALERT-BOX.</lang>
- Output:
--------------------------- Message --------------------------- Hello.How.Are.You.Today --------------------------- OK ---------------------------
Oz
<lang oz>for T in {String.tokens "Hello,How,Are,You,Today" &,} do
{System.printInfo T#"."}
end</lang>
PARI/GP
Version #1.
Simple version, like the most custom ones here (for this task). This version has 1 character delimiter, which is not allowed in the beginning and at the end of string, in addition, double, triple, etc., delimiters are not allowed too.
<lang parigp> \\ Tokenize a string str according to 1 character delimiter d. Return a list of tokens. \\ Using ssubstr() from http://rosettacode.org/wiki/Substring#PARI.2FGP \\ tokenize() 3/5/16 aev tokenize(str,d)={ my(str=Str(str,d),vt=Vecsmall(str),d1=sasc(d),Lr=List(),sn=#str,v1,p1=1); for(i=p1,sn, v1=vt[i]; if(v1==d1, listput(Lr,ssubstr(str,p1,i-p1)); p1=i+1)); return(Lr); }
{ \\ TEST print(" *** Testing tokenize from Version #1:"); print("1.", tokenize("Hello,How,Are,You,Today",",")); \\ BOTH 2 & 3 are NOT OK!! print("2.",tokenize("Hello,How,Are,You,Today,",",")); print("3.",tokenize(",Hello,,How,Are,You,Today",",")); } </lang>
- Output:
*** Testing tokenize from Version #1: 1.List(["Hello", "How", "Are", "You", "Today"]) 2.List(["Hello", "How", "Are", "You", "Today", ","]) 3.List([",Hello,,How,Are,You,Today,", "Hello", ",How,Are,You,Today,", "How", "Ar e", "You", "Today"])
Version #2.
Advanced version. Delimiter is allowed in any place. In addition, multiple delimiters are allowed too. This is really useful for considering omitted data. This version can be used for positional parameters processing, or for processing data from tables with string rows.
<lang parigp> \\ Tokenize a string str according to 1 character delimiter d. Return a list of tokens. \\ Using ssubstr() from http://rosettacode.org/wiki/Substring#PARI.2FGP \\ stok() 3/5/16 aev stok(str,d)={ my(d1c=ssubstr(d,1,1),str=Str(str,d1c),vt=Vecsmall(str),d1=sasc(d1c),
Lr=List(),sn=#str,v1,p1=1,vo=32);
if(sn==1, return(List(""))); if(vt[sn-1]==d1,sn--); for(i=1,sn, v1=vt[i];
if(v1!=d1, vo=v1; next); if(vo==d1||i==1, listput(Lr,""); p1=i+1; vo=v1; next); if(i-p1>0, listput(Lr,ssubstr(str,p1,i-p1)); p1=i+1); vo=v1; );
return(Lr); }
{ \\ TEST print(" *** Testing stok from Version #2:"); \\ pp - positional parameter(s) print("1. 5 pp: ", stok("Hello,How,Are,You,Today",",")); print("2. 5 pp: ", stok("Hello,How,Are,You,Today,",",")); print("3. 9 pp: ", stok(",,Hello,,,How,Are,You,Today",",")); print("4. 6 pp: ", stok(",,,,,,",",")); print("5. 1 pp: ", stok(",",",")); print("6. 1 pp: ", stok("Hello-o-o??",",")); print("7. 0 pp: ", stok("",",")); } </lang>
- Output:
*** Testing stok from Version #2: 1. 5 pp: List(["Hello", "How", "Are", "You", "Today"]) 2. 5 pp: List(["Hello", "How", "Are", "You", "Today"]) 3. 9 pp: List(["", "", "Hello", "", "", "How", "Are", "You", "Today"]) 4. 6 pp: List(["", "", "", "", "", ""]) 5. 1 pp: List([""]) 6. 1 pp: List(["Hello-o-o??"]) 7. 0 pp: List([""])
Pascal
<lang pascal>program TokenizeString;
{$mode objfpc}{$H+}
uses
SysUtils, Classes;
const
TestString = 'Hello,How,Are,You,Today';
var
Tokens: TStringList; I: Integer;
begin
// Uses FCL facilities, "harder" algorithm not implemented
Tokens := TStringList.Create;
try
Tokens.Delimiter := ',';
Tokens.DelimitedText := TestString;
Tokens.Delimiter := '.'; // For example
// To standard Output
WriteLn(Format('Tokenize from: "%s"', [TestString]));
WriteLn(Format('to: "%s"',[Tokens.DelimitedText]));
finally
Tokens.Free;
end;
end.</lang>
The result is:
Tokenize from: "Hello,How,Are,You,Today" to: "Hello.How.Are.You.Today"
Perl
<lang perl>print join('.', split /,/, 'Hello,How,Are,You,Today'), "\n";</lang> CLI one-liner form: <lang perl>echo "Hello,How,Are,You,Today" | perl -aplF/,/ -e '$" = "."; $_ = "@F";'</lang> which is a compact way of telling Perl to do <lang perl>BEGIN { $/ = "\n"; $\ = "\n"; } LINE: while (defined($_ = <ARGV>)) {
chomp $_; our(@F) = split(/,/, $_, 0); $" = '.'; $_ = "@F";
} continue {
die "-p destination: $!\n" unless print $_;
}</lang>
Phix
?join(split("Hello,How,Are,You,Today",","),".")
- Output:
"Hello.How.Are.You.Today"
Phixmonti
<lang Phixmonti>/# "Hello,How,Are,You,Today" "," "." subst print #/ "Hello,How,Are,You,Today" "," " " subst split len for get print "." print endfor</lang>
PHP
<lang php><?php $str = 'Hello,How,Are,You,Today'; echo implode('.', explode(',', $str)); ?></lang>
PicoLisp
<lang PicoLisp>(mapcar pack
(split (chop "Hello,How,Are,You,Today") ",") )</lang>
Pike
<lang pike>("Hello,How,Are,You,Today" / ",") * ".";</lang>
PL/I
<lang pli>tok: Proc Options(main); declare s character (100) initial ('Hello,How,Are,You,Today'); declare n fixed binary (31);
n = tally(s, ',')+1;
begin;
declare table(n) character (50) varying; declare c character (1); declare (i, k) fixed binary (31);
table = ; k = 1;
do i = 1 to length(s);
c = substr(s, i, 1);
if c = ',' then k = k + 1;
else table(k) = table(k) || c;
end;
/* display the table */ table = table || '.'; put skip list (string(table));
end; end;</lang>
- Output:
Hello.How.Are.You.Today
PL/M
<lang plm>100H: /* CP/M CALLS */ BDOS: PROCEDURE (FN, ARG); DECLARE FN BYTE, ARG ADDRESS; GO TO 5; END BDOS; EXIT: PROCEDURE; CALL BDOS(0,0); END EXIT; PRINT: PROCEDURE (S); DECLARE S ADDRESS; CALL BDOS(9,S); END PRINT;
/* SPLIT A STRING ON CHARACTER 'SEP'.
THE 'PARTS' ARRAY WILL CONTAIN POINTERS TO THE START OF EACH ELEMENT. THE AMOUNT OF PARTS IS RETURNED.
- /
TOKENIZE: PROCEDURE (SEP, STR, PARTS) ADDRESS;
DECLARE SEP BYTE, (STR, PARTS) ADDRESS; DECLARE (N, P BASED PARTS) ADDRESS; DECLARE CH BASED STR BYTE; N = 0;
LOOP:
P(N) = STR;
N = N + 1;
DO WHILE CH <> '$' AND CH <> SEP;
STR = STR + 1;
END;
IF CH = '$' THEN RETURN N;
CH = '$';
STR = STR + 1;
GO TO LOOP;
END TOKENIZE;
/* TEST ON THE GIVEN INPUT */ DECLARE HELLO (24) BYTE INITIAL ('HELLO,HOW,ARE,YOU,TODAY$'); DECLARE PARTS (10) ADDRESS; DECLARE (I, LEN) ADDRESS;
LEN = TOKENIZE(',', .HELLO, .PARTS); DO I = 0 TO LEN-1;
CALL PRINT(PARTS(I)); CALL PRINT(.'. $');
END;
CALL EXIT; EOF;</lang>
- Output:
HELLO. HOW. ARE. YOU. TODAY.
Plain English
<lang plainenglish>To run: Start up. Split "Hello,How,Are,You,Today" into some string things given the comma byte. Join the string things with the period byte giving a string. Destroy the string things. Write the string on the console. Wait for the escape key. Shut down.
To join some string things with a byte giving a string: Get a string thing from the string things. Loop. If the string thing is nil, exit. Append the string thing's string to the string. If the string thing's next is not nil, append the byte to the string. Put the string thing's next into the string thing. Repeat.</lang>
- Output:
Hello.How.Are.You.Today
Pop11
The natural solution in Pop11 uses lists.
There are built in libraries for tokenising strings, illustrated below, along with code that the user could create for the task.
First show the use of sysparse_string to break up a string and make a list of strings.
<lang pop11>;;; Make a list of strings from a string using space as separator lvars list; sysparse_string('the cat sat on the mat') -> list;
- print the list of strings
list =>
- [the cat sat on the mat]</lang>
By giving it an extra parameter 'true' we can make it recognize numbers and produce a list of strings and numbers
<lang pop11>lvars list; sysparse_string('one 1 two 2 three 3 four 4', true) -> list;
- print the list of strings and numbers
list =>
- [one 1 two 2 three 3 four 4]
- check that first item is a string and second an integer
isstring(list(1))=>
- <true>
isinteger(list(2))=>
- <true></lang>
Now show some uses of the built in procedure sys_parse_string, which allows more options:
<lang pop11>;;; Make pop-11 print strings with quotes true -> pop_pr_quotes;
- Create a string of tokens using comma as token separator
lvars str='Hello,How,Are,You,Today';
- Make a list of strings by applying sys_parse_string
- to str, using the character `,` as separator (the default
- separator, if none is provided, is the space character).
lvars strings; [% sys_parse_string(str, `,`) %] -> strings;
- print the list of strings
strings =>
- ['Hello' 'How' 'Are' 'You' 'Today']</lang>
If {% ... %} were used instead of [% ... %] the result would be a vector (i.e. array) of strings rather than a list of strings.
<lang pop11>{% sys_parse_string(str, `,`) %} -> strings;
- print the vector
strings =>
- {'Hello' 'How' 'Are' 'You' 'Today'}</lang>
It is also possible to give sys_parse_string a 'conversion' procedure, which is applied to each of the tokens. E.g. it could be used to produce a vector of numbers, using the conversion procedure 'strnumber', which converts a string to a number:
<lang pop11>lvars numbers; {% sys_parse_string('100 101 102 103 99.9 99.999', strnumber) %} -> numbers;
- the result is a vector containing integers and floats,
- which can be printed thus
numbers =>
- {100 101 102 103 99.9 99.999}</lang>
Using lower level pop-11 facilities to tokenise the string:
<lang pop11>;;; Declare and initialize variables lvars str='Hello,How,Are,You,Today';
- Iterate over string
lvars ls = [], i, j = 1; for i from 1 to length(str) do
;;; If comma
if str(i) = `,` then
;;; Prepend word (substring) to list
cons(substring(j, i - j, str), ls) -> ls;
i + 1 -> j;
endif;
endfor;
- Prepend final word (if needed)
if j <= length(str) then
cons(substring(j, length(str) - j + 1, str), ls) -> ls;
endif;
- Reverse the list
rev(ls) -> ls;</lang>
Since the task requires to use array we convert list to array
<lang pop11>;;; Put list elements and lenght on the stack destlist(ls);
- Build a vector from them
lvars ar = consvector();
- Display in a loop, putting trailing period
for i from 1 to length(ar) do
printf(ar(i), '%s.');
endfor; printf('\n');</lang>
We could use list directly for printing:
<lang pop11>for i in ls do
printf(i, '%s.');
endfor;</lang>
so the conversion to vector is purely to satisfy task formulation.
PowerShell
<lang powershell>$words = "Hello,How,Are,You,Today".Split(',') [string]::Join('.', $words)</lang>
<lang powershell>$words = "Hello,How,Are,You,Today" -split ',' $words -join '.'</lang>
The StringSplitOptions enumeration weeds out the return of empty elements. <lang PowerShell> "Hello,How,Are,You,Today", ",,Hello,,Goodbye,," | ForEach-Object {($_.Split(',',[StringSplitOptions]::RemoveEmptyEntries)) -join "."} </lang>
- Output:
Hello.How.Are.You.Today Hello.Goodbye
Prolog
<lang prolog>splitup(Sep,[token(B)|BL]) --> splitup(Sep,B,BL). splitup(Sep,[A|AL],B) --> [A], {\+ [A] = Sep }, splitup(Sep,AL,B). splitup(Sep,[],[B|BL]) --> Sep, splitup(Sep,B,BL). splitup(_Sep,[],[]) --> []. start :-
phrase(splitup(",",Tokens),"Hello,How,Are,You,Today"),
phrase(splitup(".",Tokens),Backtogether),
string_to_list(ABack,Backtogether),
writeln(ABack).</lang>
- Output:
?- start. Hello.How.Are.You.Today
Using the SWI Prolog string data type and accompanying predicates, this can be accomplished in a few lines in the top level:
<lang prolog> ?- split_string("Hello,How,Are,You,Today", ",", "", Split), | atomics_to_string(Split, ".", PeriodSeparated), | writeln(PeriodSeparated). Hello.How.Are.You.Today </lang>
Python
<lang python>text = "Hello,How,Are,You,Today" tokens = text.split(',') print ('.'.join(tokens))</lang>
Or if interpretation of the task description means you don't need to keep an intermediate array: <lang python>print ('.'.join('Hello,How,Are,You,Today'.split(',')))</lang>
Q
<lang Q>words: "," vs "Hello,How,Are,You,Today" "." sv words</lang>
- Output:
"Hello.How.Are.You.Today"
QB64
CBTJD: 2020/03/12 <lang vb>a$ = "Hello,How,Are,You,Today" ' | Initialize original string. FOR na = 1 TO LEN(a$) ' | Start loop to count number of commas.
IF MID$(a$, na, 1) = "," THEN nc = nc + 1 ' | For each comma, increment nc.
NEXT ' | End of loop. DIM t$(nc) ' | Dim t$ array with total number of commas (nc). Array base is 0. FOR nb = 1 TO LEN(a$) ' | Start loop to find each word.
c$ = MID$(a$, nb, 1) ' | Look at each character in the string. IF c$ = "," THEN ' | If the character is a comma, increase the t$ array for the next word. t = t + 1 ' | t = token word count. Starts at 0 because array base is 0. ELSE ' | Or... t$(t) = t$(t) + c$ ' | Add each character to the current token (t$) word. END IF ' | End of decision tree.
NEXT ' | End of loop. FOR nd = 0 TO t ' | Start loop to create final desired output.
tf$ = tf$ + t$(nd) + "." ' | Add each token word from t$ followed by a period to the final tf$.
NEXT ' | End of loop. PRINT LEFT$(tf$, LEN(tf$) - 1) ' | Print all but the last period of tf$. END ' | Program end. </lang>
Alternative method using word$ function:
CBTJD: 2020/03/12 <lang vb>a$ = "Hello,How,Are,You,Today" ' | Initialize original string. DIM t$(LEN(a$) / 2) ' | Create an overestimated sized array. FOR nd = 1 TO LEN(a$) ' | Start loop to find each comma.
IF MID$(a$, nd, 1) = "," THEN ' | If a comma is found... tc = tc + 1 ' | Increment tc for each found comma. t$(tc) = word$(a$, tc, ",") ' | Assign tc word to t$(tc) array. END IF ' | End decision tree.
NEXT ' | End loop. t$(tc + 1) = word$(a$, tc + 1, ",") ' | Assign last word to next array position. ft$ = t$(1) ' | Start final return string ft$ with first array value. FOR ne = 2 TO tc + 1 ' | Start loop to add periods and array values.
ft$ = ft$ + "." + t$(ne) ' | Concatenate a period with subsequent array values.
NEXT ' | End loop. PRINT ft$ ' | Print final return string ft$.
FUNCTION word$ (inSTG$, inDEC, inPRM$) ' | word$ function accepts original string, word number, and separator.
inSTG$ = inSTG$ + inPRM$ ' | Add a separator to the end of the original string. FOR na = 1 TO LEN(inSTG$) ' | Start loop to count total number of separators. IF MID$(inSTG$, na, 1) = inPRM$ THEN nc = nc + 1 ' | If separator found, increment nc. NEXT ' | End loop. IF inDEC > nc THEN word$ = "": GOTO DONE ' | If requested word number (inDEC) is greater than total words (nc), bail. FOR nd = 1 TO inDEC ' | Start loop to find requested numbered word. last = st ' | Remember the position of the last separator. st = INSTR(last + 1, inSTG$, inPRM$) ' | Find the next separator. NEXT ' | End loop. word$ = MID$(inSTG$, last + 1, st - last - 1) ' | Return requested word. DONE: ' | Label for bail destination of word count error check.
END FUNCTION ' | End of function. </lang>
Quackery
<lang Quackery> [ [] [] rot
witheach
[ dup char , = iff
[ drop nested join [] ]
else join ]
nested join ] is tokenise ( $ --> [ )
[ witheach [ echo$ say "." ] ] is display ( [ --> )
$ "Hello,How,Are,You,Today" tokenise display</lang>
- Output:
Hello.How.Are.You.Today.
R
<lang R>text <- "Hello,How,Are,You,Today" junk <- strsplit(text, split=",") print(paste(unlist(junk), collapse="."))</lang>
or the one liner
<lang R>paste(unlist(strsplit(text, split=",")), collapse=".")</lang>
Racket
<lang racket>
- lang racket
(string-join (string-split "Hello,How,Are,You,Today" ",") ".")
- -> "Hello.How.Are.You.Today"
</lang>
Raku
(formerly Perl 6)
<lang perl6>'Hello,How,Are,You,Today'.split(',').join('.').say;</lang>
Or with function calls:
<lang perl6>say join '.', split ',', 'Hello,How,Are,You,Today';</lang>
Raven
<lang raven>'Hello,How,Are,You,Today' ',' split '.' join print</lang>
REBOL
<lang REBOL>print ["Original:" original: "Hello,How,Are,You,Today"] tokens: parse original "," dotted: "" repeat i tokens [append dotted rejoin [i "."]] print ["Dotted: " dotted]</lang>
- Output:
Original: Hello,How,Are,You,Today Dotted: Hello.How.Are.You.Today.
Red
<lang Red>str: "Hello,How,Are,You,Today" >> tokens: split str "," >> probe tokens ["Hello" "How" "Are" "You" "Today"]
>> periods: replace/all form tokens " " "." ;The word FORM converts the list series to a string removing quotes. >> print periods ;then REPLACE/ALL spaces with period Hello.How.Are.You.Today</lang>
Retro
<lang Retro>{{
: char ( -$ ) " " ; : tokenize ( $-$$ ) @char ^strings'splitAtChar withLength 1- over + 0 swap ! tempString ; : action ( $- ) keepString ^buffer'add ;
---reveal---
: split ( $cb- ) ^buffer'set !char char ^strings'append [ tokenize action dup 1 <> ] while drop ^buffer'get drop ;
}}</lang>
This will suffice to split a string into an array of substrings. It is used like this:
<lang Retro>create strings 100 allot "Hello,How,Are,You,Today" ', strings split</lang>
Since the buffer' vocabulary creates a zero-terminated buffer, we can display it using the each@ combinator and a simple quote:
<lang Retro>strings [ @ "%s." puts ] ^types'STRING each@</lang>
REXX
version 1
This REXX version doesn't append a period to the last word in the list. <lang rexx>/*REXX program separates a string of comma─delimited words, and echoes them ──► terminal*/ original = 'Hello,How,Are,You,Today' /*some words separated by commas (,). */ say 'The input string:' original /*display original string ──► terminal.*/ new= original /*make a copy of the string. */
do #=1 until new== /*keep processing until NEW is empty.*/
parse var new @.# ',' new /*parse words delineated by a comma (,)*/
end /*#*/ /* [↑] the new array is named @. */
say /* NEW is destructively parsed. [↑] */ say center(' Words in the string ', 40, "═") /*display a nice header for the list. */
do j=1 for # /*display all the words (one per line),*/
say @.j || left(., j\==#) /*maybe append a period (.) to a word. */
end /*j*/ /* [↑] don't append a period if last. */
say center(' End─of─list ', 40, "═") /*display a (EOL) trailer for the list.*/</lang>
- output when using the internal default input:
The input string: Hello,How,Are,You,Today ═════════ Words in the string ══════════ Hello. How. Are. You. Today ═════════════ End─of─list ══════════════
version 2
This REXX version won't work if any of the words have an embedded blank (or possible a tab character) in them, as in:
Hello,Betty Sue,How,Are,You,Today <lang rexx>/*REXX program to separate a string of comma-delimited words and echo */ sss='Hello,How,Are,You,Today' say 'input string='sss say say 'Words in the string:' ss =translate(sss,' ',',') dot='.' Do i=1 To words(ss)
If i=words(ss) Then dot= say word(ss,i)dot End
say 'End-of-list.'</lang> output is similar to REXX version 1.
Ring
<lang ring> see substr("Hello,How,Are,You,Today", ",", ".") </lang>
Ruby
<lang ruby>puts "Hello,How,Are,You,Today".split(',').join('.')</lang>
Rust
<lang rust>fn main() {
let s = "Hello,How,Are,You,Today";
let tokens: Vec<&str> = s.split(",").collect();
println!("{}", tokens.join("."));
}</lang>
S-lang
<lang S-lang>variable a = strchop("Hello,How,Are,You,Today", ',', 0); print(strjoin(a, "."));</lang>
- Output:
"Hello.How.Are.You.Today"
Scala
<lang scala>println("Hello,How,Are,You,Today" split "," mkString ".")</lang>
Scheme
<lang scheme>(use-modules (ice-9 regex)) (define s "Hello,How,Are,You,Today") (define words (map match:substring (list-matches "[^,]+" s)))
(do ((n 0 (+ n 1))) ((= n (length words)))
(display (list-ref words n))
(if (< n (- (length words) 1))
(display ".")))</lang>
(with SRFI 13) <lang scheme>(define s "Hello,How,Are,You,Today") (define words (string-tokenize s (char-set-complement (char-set #\,)))) (define t (string-join words "."))</lang>
<lang Scheme>(print
(string-join (string-split "Hello,How,Are,You,Today" #\,) ".")) </lang>
- Output:
Hello.How.Are.You.Today
Seed7
<lang seed7>var array string: tokens is 0 times "";
tokens := split("Hello,How,Are,You,Today", ",");</lang>
Self
<lang self>| s = 'Hello,How,Are,You,Today' | ((s splitOn: ',') joinUsing: '.') printLine. </lang>
Sidef
<lang ruby>'Hello,How,Are,You,Today'.split(',').join('.').say;</lang>
Simula
<lang simula>BEGIN
CLASS TEXTARRAY(N); INTEGER N;
BEGIN
TEXT ARRAY ARR(1:N);
END TEXTARRAY;
REF(TEXTARRAY) PROCEDURE SPLIT(T,DELIM); TEXT T; CHARACTER DELIM;
BEGIN
INTEGER N, I, LPOS;
REF(TEXTARRAY) A;
N := 1;
T.SETPOS(1);
WHILE T.MORE DO
IF T.GETCHAR = DELIM THEN
N := N+1;
A :- NEW TEXTARRAY(N);
I := 0;
LPOS := 1;
T.SETPOS(LPOS);
WHILE T.MORE DO
IF T.GETCHAR = DELIM THEN
BEGIN
I := I+1;
A.ARR(I) :- T.SUB(LPOS,T.POS-LPOS-1);
LPOS := T.POS;
END;
I := I+1;
A.ARR(I) :- T.SUB(LPOS,T.LENGTH-LPOS+1);
SPLIT :- A;
END SPLIT;
BEGIN
TEXT S;
REF(TEXTARRAY) TA;
INTEGER I;
S :- "HELLO,HOW,ARE,YOU,TODAY";
TA :- SPLIT(S,',');
FOR I := 1 STEP 1 UNTIL TA.N DO
BEGIN
OUTTEXT(TA.ARR(I));
OUTCHAR('.');
END;
OUTIMAGE;
END;
END. </lang>
- Output:
HELLO.HOW.ARE.YOU.TODAY.
Slate
<lang slate>('Hello,How,Are,You,Today' splitWith: $,) join &separator: '.'.</lang>
Smalltalk
<lang smalltalk>|array | array := 'Hello,How,Are,You,Today' subStrings: $,. array fold: [:concatenation :string | concatenation, '.', string ]</lang>
Some implementations also have a join: convenience method that allows the following shorter solution:
<lang smalltalk>('Hello,How,Are,You,Today' subStrings: $,) join: '.'</lang>
The solution displaying a trailing period would be:
<lang smalltalk>|array | array := 'Hello,How,Are,You,Today' subStrings: $,. array inject: into: [:concatenation :string | concatenation, string, '.' ]</lang>
SNOBOL4
For this task, it's convenient to define Perl-style split( ) and join( ) functions.
<lang SNOBOL4> define('split(chs,str)i,j,t,w2') :(split_end) split t = table() sp1 str pos(0) (break(chs) | rem) $ t + span(chs) (break(chs) | ) . w2 = w2 :s(sp1)
- t = differ(str,) str ;* Uncomment for CSnobol
split = array(i)
sp2 split<j = j + 1> = t<j> :s(sp2)f(return) split_end
define('join(ch,a)i,') :(join_end)
join join = join a
join = join ?a ch :s(join)f(return)
join_end
- # Test and display
output = join('.',split(',','Hello,How,Are,You,Today'))
end</lang>
- Output:
Hello.How.Are.You.Today
Standard ML
<lang sml>val splitter = String.tokens (fn c => c = #","); val main = (String.concatWith ".") o splitter;</lang>
Test:
<lang sml>- main "Hello,How,Are,You,Today" val it = "Hello.How.Are.You.Today" : string</lang>
Swift
<lang swift>let text = "Hello,How,Are,You,Today" let tokens = text.components(separatedBy: ",") // for single or multi-character separator print(tokens) let result = tokens.joined(separator: ".") print(result)</lang>
<lang swift>let text = "Hello,How,Are,You,Today" let tokens = text.characters.split(",").map{String($0)} // for single-character separator print(tokens) let result = tokens.joinWithSeparator(".") print(result)</lang>
<lang swift>let text = "Hello,How,Are,You,Today" let tokens = split(text, { $0 == "," }) // for single-character separator println(tokens) let result = ".".join(tokens) println(result)</lang>
For multi-character separators:<lang swift>import Foundation
let text = "Hello,How,Are,You,Today" let tokens = text.componentsSeparatedByString(",") print(tokens)</lang>
Tcl
Generating a list form a string by splitting on a comma: <lang tcl>split $string ","</lang>
Joining the elements of a list by a period: <lang tcl>join $list "."</lang>
Thus the whole thing would look like this: <lang tcl>puts [join [split "Hello,How,Are,You,Today" ","] "."]</lang>
If you'd like to retain the list in a variable with the name "words", it would only be marginally more complex: <lang tcl>puts [join [set words [split "Hello,How,Are,You,Today" ","]] "."]</lang>
(In general, the regexp command is also used in Tcl for tokenization of strings, but this example does not need that level of complexity.)
tr
tr knows nothing about arrays, so this solution only changes each comma to a period.
<lang bash>echo 'Hello,How,Are,You,Today' | tr ',' '.'</lang>
TUSCRIPT
<lang tuscript> $$ MODE TUSCRIPT SET string="Hello,How,Are,You,Today" SET string=SPLIT (string,":,:") SET string=JOIN (string,".") </lang>
TXR
Collecting tokens which consist of non-empty sequences of non-commas.
<lang txr>@(next :list "Hello,How,Are,You,Today") @(coll)@{token /[^,]+/}@(end) @(output) @(rep)@token.@(last)@token@(end) @(end)</lang>
Different approach. Collect tokens, each of which is a piece of text which either terminates before a comma, or else extends to the end of the line.
<lang txr>@(next :list "Hello,How,Are,You,Today") @(coll)@(maybe)@token,@(or)@token@(end)@(end) @(output) @(rep)@token.@(last)@token@(end) @(end)</lang>
Using TXR Lisp:
<lang bash>txr -p '(cat-str (split-str "Hello,How,Are,You,Today" ",") ".")' Hello.How.Are.You.Today</lang>
UNIX Shell
<lang bash>string='Hello,How,Are,You,Today'
(IFS=,
printf '%s.' $string echo)</lang>
<lang bash>#! /bin/bash stripchar-l ()
- removes the specified character from the left side of the string
- USAGE: stripchar "stuff" "s" --> tuff
{
string="$1";
string=${string#"$2"};
echo "$string"
}
join ()
- join a string of characters on a specified delimiter
- USAGE: join "1;2;3;4" ";" "," --> 1,2,3,4
{
local result="";
local list="$1";
OLDIFS="$IFS";
local IFS=${2-" "};
local output_field_seperator=${3-" "};
for element in $list;
do
result="$result$output_field_seperator$element";
done;
result="`stripchar-l "$result" "$output_field_seperator"`";
echo "$result";
IFS="$OLDIFS"
}
split () {
- split a string of characters on a specified delimiter
- USAGE: split "1;2;3;4" ";" --> 1 2 3 4
local list="$1";
local input_field_seperator=${2-" "};
local output_field_seperator=" ";
#defined in terms of join
join "$list" "$input_field_seperator" "$output_field_seperator"
}
strtokenize () {
- splits up a string of characters into tokens,
- based on a user supplied delimiter
- USAGE:strtokenize "1;2;3;4" ";" ":" --> 1:2:3:4
local list="$1";
local input_delimiter=${2-" "}; local output_delimiter=${3-" "}; local contains_a_space=" "; #added to highlight the use
#of " " as an argument to join #splits it input then joins it with a user supplied delimiter join "$( split "$list" "$input_delimiter" )" \ "$contains_a_space" "$output_delimiter";
}</lang>
Example
<lang bash> strtokenize "Hello,How,Are,You,Today" "," "."
Hello.How.Are.You.Today </lang>
<lang sh> string1="Hello,How,Are,You,Today" elements_quantity=$(echo $string1|tr "," "\n"|wc -l)
present_element=1 while [ $present_element -le $elements_quantity ];do echo $string1|cut -d "," -f $present_element|tr -d "\n" if [ $present_element -lt $elements_quantity ];then echo -n ".";fi present_element=$(expr $present_element + 1) done echo
- or to cheat
echo "Hello,How,Are,You,Today"|tr "," "."</lang>
UnixPipes
<lang bash>token() {
(IFS=, read -r A B; echo "$A".; test -n "$B" && (echo "$B" | token))
}
echo "Hello,How,Are,You" | token</lang>
Ursa
<lang ursa>decl string text set text "Hello,How,Are,You,Today" decl string<> tokens set tokens (split text ",") for (decl int i) (< i (size tokens)) (inc i)
out tokens "." console
end for out endl console</lang>
Ursala
A list of strings is made by separating at the commas using the library function, sep. A single string is then made by joining the list of strings with periods using the library function, mat. Each of these is a second order function parameterized by the delimiter. Character literals are preceded by a backquote. <lang Ursala>#import std
token_list = sep`, 'Hello,How,Are,You,Today'
- cast %s
main = mat`. token_list</lang>
- Output:
'Hello.How.Are.You.Today'
Vala
<lang Vala>void main() {
string s = "Hello,How,Are,You,Today";
print(@"$(string.joinv(".", s.split(",")))");
}</lang>
- Output:
Hello.How.Are.You.Today
VBA
<lang vb>Sub Main() Dim temp() As String
temp = Tokenize("Hello,How,Are,You,Today", ",")
Display temp, Space(5)
End Sub
Private Function Tokenize(strS As String, sep As String) As String()
Tokenize = Split(strS, sep)
End Function
Private Sub Display(arr() As String, sep As String)
Debug.Print Join(arr, sep)
End Sub</lang>
- Output:
Hello How Are You Today
VBScript
<lang vb> s = "Hello,How,Are,You,Today" WScript.StdOut.Write Join(Split(s,","),".") </lang>
- Output:
Hello.How.Are.You.Today
Vedit macro language
Vedit does not use the concepts of array or list. Normally, the text is processed as text in an edit buffer.
However, this example shows how to split the text into multiple text registers (10, 11, 12 etc.). The contents of each text register is then displayed to user, separated by a period.
<lang vedit>Buf_Switch(Buf_Free) Ins_Text("Hello,How,Are,You,Today")
// Split the text into text registers 10, 11, ... BOF
- 1 = 9
Repeat(ALL) {
#1++
#2 = Cur_Pos
Search(",", ADVANCE+ERRBREAK)
Reg_Copy_Block(#1, #2, Cur_Pos-1)
} Reg_Copy_Block(#1, #2, EOB_Pos)
// Display the list for (#3 = 10; #3 <= #1; #3++) {
Reg_Type(#3) Message(".")
}
Buf_Quit(OK)</lang>
Vlang
<lang go>// Tokenize a string, in V // Tectonics: v run tokenize-a-string.v module main
// starts here pub fn main() {
println("Hello,How,Are,You,Today".split(',').join('.'))
}</lang>
- Output:
prompt$ v run rosetta/tokenize-a-string.v Hello.How.Are.You.Today
WinBatch
<lang WinBatch>text = 'Hello,How,Are,You,Today' result = BoxOpen('WinBatch Tokenizing Example', ) for ix = 1 to itemcount(text,',')
result = result : itemextract(ix, text, ',') : '.' BoxText(result)
next display(10, 'End of Program', 'Dialog and program will close momentarily.') BoxShut()</lang>
- Output:
Hello.How.Are.You.Today.
Wortel
<lang wortel>@join "." @split "," "Hello,How,Are,You,Today"</lang> Returns
"Hello.How.Are.You.Today"
Wren
<lang ecmascript>var s = "Hello,How,Are,You,Today" var t = s.split(",").join(".") + "." System.print(t)</lang>
- Output:
Hello.How.Are.You.Today.
XPath 2.0
<lang XPath>string-join(tokenize("Hello,How,Are,You,Today", ","), ".")</lang>
- Output:
Hello.How.Are.You.Today
XPL0
<lang XPL0>string 0; include c:\cxpl\codes; int I, J, K, Char; char String, Array(5,6); \5 words and 5 maximum chars + terminating 0
[String:= "Hello,How,Are,You,Today"; I:= 0; K:= 0; repeat J:= 0;
loop [Char:= String(I);
I:= I+1;
if Char=^, or Char=0 then quit;
Array(K,J):= Char;
J:= J+1;
];
Array(K,J):= 0; \terminate word
K:= K+1; \next word in array
until K>=5; for K:= 4 downto 0 do [Text(0, addr Array(K,0)); ChOut(0, ^.)]; CrLf(0); ]</lang>
The 'addr' operator is used to fetch the 32-bit address of Array rather than a byte from the character array.
Output (done in reverse order to emphasize the tokens are indeed separate):
Today.You.Are.How.Hello.
Yabasic
<lang Yabasic>dim s$(1)
n = token("Hello. How are you today?", s$(), ".? ")
for i = 1 to n print s$(i); if i < n print "."; next print</lang>
zkl
<lang zkl>"Hello,How,Are,You,Today".split(",").concat(".").println(); Hello.How.Are.You.Today</lang>
Zoea
<lang Zoea> program: tokenize_a_string
input: "Hello,How,Are,You,Today" output: "Hello.How.Are.You.Today"
</lang>
Zoea Visual
Zsh
<lang zsh>str='Hello,How,Are,You,Today' tokens=(${(s:,:)str}) print ${(j:.:)tokens}</lang>
Or, using SH_SPLIT_WORD:
<lang zsh>str='Hello,How,Are,You,Today' IFS=, echo ${(j:.:)${=str}}</lang>