String Character Length
polyphonic ringtones mono ringtones hydrocodone online but adipex alltel ringtones order valium tenuate online cheap phentermine alprazolam online flexeril online buy hgh meridia cheap ultram free ringtones free funny ringtones cheap diethylpropion free qwest ringtones free real ringtones cheap lipitor ultracet online tramadol online cialis online free sony ericsson ringtones free funny ringtones zoloft free music ringtones cheap carisoprodol zanaflex online nokia ringtones cheap lortab free motorola ringtones free samsung ringtones alltel ringtones free sharp ringtones soma online mtv ringtones levitra online cheap pharmacy online real ringtones ambien online cheap diethylpropion xanax online lorazepam real ringtones free punk ringtones buy albuterol xanax online online fioricet cheap didrex free verizon ringtones buy ultracet free tracfone ringtones clomid online online ativan buy xanax buy nexium free sonyericsson ringtones cheap clomid adipex online cialis cheap hydrocodone levitra online free midi ringtones order lisinopril free wwe ringtones cheap phentermine tracfone ringtones cheap sildenafil free verizon ringtones midi ringtones phentermine online rivotril online vicodin cheap celexa free funny ringtones cheap flexeril hoodia online cheap tenuate buy prozac sprint ringtones cheap norco online meridia sprint ringtones diazepam online online fioricet free mp3 ringtones buy paxil zanaflex online but alprazolam soma online diazepam online wwe ringtones zoloft buy lorazepam norco free ringtones cheap carisoprodol qwest ringtones clonazepam online cheap celexa cheap clonazepam lipitor online nokia ringtones lisinopril online propecia online free nokia ringtones punk ringtones buy carisoprodol cheap ultram sony ericsson ringtones free tracfone ringtones zyban online cheap hoodia tramadol online free cingular ringtones jazz ringtones alltel ringtones but flexeril free nextel ringtones kyocera ringtones free samsung ringtones free motorola ringtones cheap meridia xenical online free sony ringtones cheap paxil sagem ringtones ativan online cheap rivotril order ortho cheap celexa free sharp ringtones adipex online cheap ortho but hydrocodone propecia online free cingular ringtones free nextel ringtones free sagem ringtones adipex free punk ringtones didrex online sonyericsson ringtones didrex online diazepam online samsung ringtones sharp ringtones cheap meridia mono ringtones valium online hgh online nextel ringtones free funny ringtones lortab online but ultracet viagra online albuterol vicodin online free motorola ringtones cheap lorazepam free ericsson ringtones mp3 ringtones free sonyericsson ringtones cheap viagra cheap cyclobenzaprine cheap vigrx wwe ringtones cheap zoloft cheap clomid cheap fioricet samsung ringtones albuterol online tramadol online cheap xenical alprazolam online cheap clonazepam mp3 ringtones norco online xanax online mtv ringtones free qwest ringtones valium cheap sildenafil zyban online order alprazolam levitra cheap soma cheap ortho cheap xenical zyban online polyphonic ringtones motorola ringtones lisinopril online free sagem ringtones free music ringtones cheap ativan free jazz ringtones cool ringtones ericsson ringtones tracfone ringtones
![Task](http://static.miraheze.org/rosettacodewiki/thumb/b/ba/Rcode-button-task-crushed.png/64px-Rcode-button-task-crushed.png)
You are encouraged to solve this task according to the task description, using any language you may know.
In this task, the goal is to find the character length of a string. This means encodings like UTF-8 need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.
For byte length, see String Byte Length.
ActionScript
myStrVar.length()
Ada
Compiler: GCC 4.1.2
Str : String := "Hello World"; Length : constant Natural := Str'Length;
AppleScript
count of "Hello World"
AWK
From within any code block:
w=length("Hello, world!") # static string example x=length("Hello," s " world!") # dynamic string example y=length($1) # input field example z=length(s) # variable name example
Ad hoc program from command line:
echo "Hello, world!" | awk '{print length($0)}'
From executable script: (prints for every line arriving on stdin)
#!/usr/bin/awk -f {print"The length of this line is "length($0)}
C
Compiler: GCC 3.3.3
#include <string.h> int main(void) { const char *string = "Hello, world!"; size_t length = strlen(string); return 0; }
or by hand:
int main(void) { const char *string = "Hello, world!"; size_t length = 0; char *p = (char *) string; while (*p != '\0') length ; return 0; }
or (for arrays of char only)
#include <stdlib.h> int main(void) { char const s[] = "Hello, world!"; size_t length = sizeof s - 1; return 0; }
For wide character strings (usually Unicode):
#include <stdio.h> #include <wchar.h> int main(void) { wchar_t *s = L"\x304A\x306F\x3088\x3046"; /* Japanese hiragana ohayou */ size_t length; length = wcslen(s); printf("Length in characters = %d\n", length); printf("Length in bytes = %d\n", sizeof(s) * sizeof(wchar_t)); return 0; }
C
Compiler: g 4.0.2
#include <string> // note: not <string.h> int main() { std::string s = "Hello, world!"; // Always in characters == bytes since sizeof(char) == 1 std::string::size_type length = s.length(); // option 1: In Characters/Bytes std::string::size_type size = s.size(); // option 2: In Characters/Bytes }
For wide character strings:
#include <string> int main() { std::wstring s = L"\u304A\u306F\u3088\u3046"; std::wstring::size_type length = s.length(); }
C#
Platform: .NET Language Version: 1.0
string s = "Hello, world!"; int clength = s.Length; // In characters int blength = System.Text.Encoding.GetBytes(s).length; // In Bytes.
Clean
Clean Strings are unboxed arrays of characters. Characters are always a single byte. The function size returns the number of elements in an array.
import StdEnv strlen :: String -> Int strlen string = size string Start = strlen "Hello, world!"
ColdFusion
#len("Hello World")#
Common Lisp
(length "Hello World")
Component Pascal
LEN("Hello, World!")
E
"Hello World".size()
Forth
Interpreter: ANS Forth
CREATE s ," Hello world" \ create string "s" s C@ ( -- length )
Haskell
Compiler: GHC 6.6
strlen = length "Hello, world!"
IDL
Compiler: any IDL compiler should do
length = strlen("Hello, world!")
Java
Java encodes strings in UTF-16, which represents each character with one or two 16-bit values. The most commonly used characters are represented by one 16-bit value, while rarer ones like some mathematical symbols are represented by two.
The length method of String objects gives the number of 16-bit values used to encode a string.
String s = "Hello, world!"; int length = s.length();
Since Java 1.5, the actual number of characters can be determined by calling the codePointCount method.
String str = "\uD834\uDD2A"; //U 1D12A int length1 = str.length(); //2 int length2 = str.codePointCount(0, str.length()); //1
JavaScript
JavaScript encodes strings in UTF-16, which represents each character with one or two 16-bit values. The most commonly used characters are represented by one 16-bit value, while rarer ones like some mathematical symbols are represented by two.
JavaScript has no built-in way to determine how many characters are in a string. However, if the string only contains commonly used characters, the number of characters will be equal to the number of 16-bit values used to represent the characters.
var str1 = "Hello, world!"; var len1 = str1.length; //13 var str2 = "\uD834\uDD2A"; //U 1D12A represented by a UTF-16 surrogate pair var len2 = str2.length; //2
JudoScript
//Store length of hello world in length and print it . length = "Hello World".length();
Lua
Interpreter: Lua 5.0 or later.
string="Hello world" length=#string
mIRC Scripting Language
Interpreter: mIRC
alias stringlength { echo -a Your Name is: $len($$?="Whats your name") letters long! }
OCaml
Interpreter/Compiler: Ocaml 3.09
String.length "Hello world";;
Perl
Interpreter: Perl any 5.X
my $length = length "Hello, world!";
PHP
$length = strlen('Hello, world!');
PL/SQL
DECLARE string VARCHAR2( 50 ) := 'Hello, world!'; stringlength NUMBER; BEGIN stringlength := length( string ); END;
Python
Interpreter: Python 2.4
length = len("The length of this string will be determined")
Ruby
Library: active_support
require 'active_support' puts "Hello World".chars.length
Scheme
(string-length "Hello world")
Seed7
length("Hello, world!")
Smalltalk
string := 'Hello, world!". string size.
Standard ML
Interpreter: SML/NJ 110.60, Moscow ML 2.01 (January 2004)
Compiler: MLton 20061107
val strlen = size "Hello, world!";
Tcl
Basic version:
string length "Hello, world!"
or more elaborately, needs Interpreter any 8.X. Tested on 8.4.12.
fconfigure stdout -encoding utf-8; #So that Unicode string will print correctly set s1 "hello, world" set s2 "\u304A\u306F\u3088\u3046" puts [format "length of \"%s\" in characters is %d" $s1 [string length $s1]] puts [format "length of \"%s\" in characters is %d" $s2 [string length $s2]]
UNIX Shell
With external utilities:
Interpreter: any bourne shell
string='Hello, world!' length=`echo -n "$string" | wc -c | tr -dc '0-9'` echo $length # if you want it printed to the terminal
With SUSv3 parameter expansion modifier:
Interpreter: Almquist SHell (NetBSD 3.0), Bourne Again SHell 3.2, Korn SHell (5.2.14 99/07/13.2), Z SHell
string='Hello, world!' length="${#string}" echo $length # if you want it printed to the terminal
VBScript
Len(string|varname)
Returns the length of the string|varname Returns null if string|varname is null
xTalk
Interpreter: HyperCard
put the length of "Hello World"
or
put the number of characters in "Hello World"
- Programming Tasks
- Solutions by Programming Task
- Split and Needing Review
- ActionScript
- Ada
- AppleScript
- AWK
- C
- C plus plus
- C sharp
- Clean
- ColdFusion
- Common Lisp
- Component Pascal
- E
- Forth
- Haskell
- IDL
- Java
- JavaScript
- JudoScript
- Lua
- MIRC Scripting Language
- OCaml
- Perl
- PHP
- PL/SQL
- Python
- Ruby
- Scheme
- Seed7
- Smalltalk
- Standard ML
- Tcl
- UNIX Shell
- VBScript
- XTalk