Floyd's triangle: Difference between revisions

Added XBasic
(→‎{{header|Picat}}: Moved into subsections.)
(Added XBasic)
 
(28 intermediate revisions by 12 users not shown)
Line 24:
{{trans|Python}}
 
<langsyntaxhighlight lang="11l">F floyd(rowcount)
V rows = [[1]]
L rows.len < rowcount
Line 37:
 
pfloyd(floyd(5))
pfloyd(floyd(14))</langsyntaxhighlight>
 
{{out}}
Line 66:
A very concise coding, an illustration of CISC power of the S/360 operation codes. Also an example of the use of EDMK and EX instructions.
For macro usage see [[360_Assembly_macros#360_Assembly_Structured_Macros|Structured Macros]] .
<langsyntaxhighlight lang="360asm">* Floyd's triangle 21/06/2018
FLOYDTRI PROLOG
L R5,NN nn
Line 104:
ZN DC X'4020202020202020' mask CL8 7num
YREGS
END FLOYDTRI</langsyntaxhighlight>
{{out}}
<pre>
Line 130:
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
=={{header|ABAP}}==
REPORT zmbr_test.
PARAMETERS: p_row TYPE i.
START-OF-SELECTION.
DATA(lv_column) = 0.
DATA(lv_number) = 0.
DO p_row TIMES.
lv_column += 1.
DO lv_column TIMES.
lv_number += 1.
WRITE: lv_number.
ENDDO.
WRITE:/ space.
ENDDO.
{{out}}
<pre>
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
</pre>
{{out}}
<pre>
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
</pre>
 
=={{header|ABC}}==
<syntaxhighlight lang="ABC">HOW TO RETURN width n:
SELECT:
n<10: RETURN 1
ELSE: RETURN 1 + width floor (n/10)
 
HOW TO DISPLAY A FLOYD TRIANGLE WITH lines LINES:
PUT lines * (lines+1)/2 IN maxno
PUT 1 IN n
FOR line IN {1..lines}:
FOR col IN {1..line}:
WRITE n >> (1 + width (maxno - lines + col))
PUT n+1 IN n
WRITE /
 
DISPLAY A FLOYD TRIANGLE WITH 5 LINES
WRITE /
DISPLAY A FLOYD TRIANGLE WITH 14 LINES
WRITE /</syntaxhighlight>
{{out}}
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|Action!}}==
<langsyntaxhighlight Actionlang="action!">PROC Triangle(BYTE level)
INT v,i
BYTE x,y
Line 182 ⟶ 270:
 
LMARGIN=oldLMARGIN ;restore left margin on the screen
RETURN</langsyntaxhighlight>
{{out}}
[https://gitlab.com/amarok8bit/action-rosetta-code/-/raw/master/images/Floyd's_triangle.png Screenshot from Atari 8-bit computer]
Line 209 ⟶ 297:
=={{header|Ada}}==
 
<syntaxhighlight lang="ada">
<lang Ada>
with Ada.Text_IO, Ada.Integer_Text_IO, Ada.Command_Line;
 
Line 222 ⟶ 310:
end loop;
end Floyd_Triangle;
</syntaxhighlight>
</lang>
{{out}}
 
Line 252 ⟶ 340:
=={{header|ALGOL 68}}==
{{works with|ALGOL 68G|Any - tested with release 2.8.win32}}
<langsyntaxhighlight lang="algol68"># procedure to print a Floyd's Triangle with n lines #
PROC floyds triangle = ( INT n )VOID:
BEGIN
Line 284 ⟶ 372:
floyds triangle( 14 )
 
)</langsyntaxhighlight>
{{out}}
<pre>
Line 310 ⟶ 398:
 
=={{header|ALGOL W}}==
{{trans| ALgOL_68ALGOL_68}}
<langsyntaxhighlight lang="algolw">begin
% prints a Floyd's Triangle with n lines %
procedure floydsTriangle ( integer value n ) ;
Line 351 ⟶ 439:
floydsTriangle( 14 )
 
end.</langsyntaxhighlight>
{{out}}
<pre>
Line 375 ⟶ 463:
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
=={{header|APL}}==
{{works with|Dyalog APL}}
<syntaxhighlight lang="apl">floyd←{
max←⍵×(⍵+1)÷2
tri←↑(⍳max)⊂⍨(0,⍳max-1)∊+\0,⍳⍵
wdt←⌈⍀⊖≢∘⍕¨tri
↑,/wdt{' ',(-⍺××⍵)↑⍕⍵}¨tri
}</syntaxhighlight>
{{out}}
<syntaxhighlight lang="apl"> floyd 5
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
floyd 14
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</syntaxhighlight>
 
=={{header|AppleScript}}==
Line 380 ⟶ 499:
{{Trans|JavaScript}}
{{Trans|Haskell}} (mapAccumL versions)
<langsyntaxhighlight AppleScriptlang="applescript">-- FLOYDs TRIANGLE -----------------------------------------------------------
 
-- floyd :: Int -> [[Int]]
Line 655 ⟶ 774:
return lst
end tell
end zipWith</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 681 ⟶ 800:
Or, defining only the relationship between successive terms:
 
<langsyntaxhighlight lang="applescript">-- floyd :: [Int] -> [Int]
on floyd(xs)
set n to succ(length of xs)
Line 888 ⟶ 1,007:
set my text item delimiters to dlm
str
end unlines</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 898 ⟶ 1,017:
 
Or as a partially populated matrix:
<langsyntaxhighlight lang="applescript">--------------------- FLOYD'S TRIANGLE -------------------
 
-- floyd :: Int -> [[Maybe Int]]
Line 1,141 ⟶ 1,260:
set my text item delimiters to dlm
return s
end unwords</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 1,166 ⟶ 1,285:
----
===Straightforward===
<langsyntaxhighlight lang="applescript">on FloydsTriangle(n)
set triangle to {}
set i to 0
Line 1,213 ⟶ 1,332:
set triangle14 to FloydsTriangle(14)
set text14 to matrixToText(triangle14, (count (end of end of triangle14 as text)) + 1)
return linefeed & text5 & (linefeed & linefeed & text14 & linefeed)</langsyntaxhighlight>
 
{{output}}
<langsyntaxhighlight lang="applescript">"
1
2 3
Line 1,237 ⟶ 1,356:
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
"</langsyntaxhighlight>
 
=={{header|Arturo}}==
 
{{incorrect|Arturo|The last line should only have one space between values}}
<langsyntaxhighlight lang="rebol">floydwidth: function [rowcountrows col] .memoize [
floor 2 + log col + 1 + (rows * rows - 1) / 2 10
result: new [[1]]
]
while [rowcount > size result][
 
n: inc last last result
floyd: function [rows][
row: new []
n: 1
loop n..n+size last result 'k -> 'row ++ @[k]
row: 1
'result ++ @[row]
col: 0
while -> row =< rows [
prints pad ~"|n|" width rows col
inc 'col
inc 'n
if col = row [
print ""
col: 0
inc 'row
]
]
return result
]
 
floyd 5
loop [5 14] 'j [
print ""
f: floyd j
floyd 14</syntaxhighlight>
loop f 'row -> print map row 'r [pad to :string r 3]
print ""
]</lang>
 
{{out}}
 
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|AutoHotkey}}==
<langsyntaxhighlight AutoHotkeylang="autohotkey">Floyds_triangle(row){
i = 0
loop %row%
Line 1,303 ⟶ 1,429:
res.=" "
return % res
}</langsyntaxhighlight>
Examples:<syntaxhighlight lang AutoHotkey="autohotkey">MsgBox % Floyds_triangle(14)</langsyntaxhighlight>
Outputs:<pre> 1
2 3
Line 1,321 ⟶ 1,447:
 
=={{header|AWK}}==
<langsyntaxhighlight AWKlang="awk">#!/bin/awk -f
 
BEGIN {
Line 1,336 ⟶ 1,462:
}
}
</syntaxhighlight>
</lang>
<p>output from: awk -f floyds_triangle.awk -v rows=5</p>
<pre>
Line 1,366 ⟶ 1,492:
==={{header|Applesoft BASIC}}===
Line <code>150,160</code> creates a vector of the length of all entries is the last row. These values are used in line <code>210,220</code> to put the cursor at the correct horizontal position.
<langsyntaxhighlight lang="basic">
100 :
110 REM FLOYD'S TRIANGLE
Line 1,378 ⟶ 1,504:
220 HTAB COL: PRINT NR;: NEXT C
230 PRINT : NEXT R
</syntaxhighlight>
</lang>
{{out}}
<pre>]RUN
Line 1,405 ⟶ 1,531:
==={{header|BASIC256}}===
{{works with|BASIC256|2.0.0.11}}
<syntaxhighlight lang="basic256">
<lang BASIC256>
function trianglevalue(col, row)
return (row-1)*row\2 + col
Line 1,424 ⟶ 1,550:
print
call printtriangle(14)
</syntaxhighlight>
</lang>
{{out}}
<pre>
Line 1,450 ⟶ 1,576:
 
==={{header|BBC BASIC}}===
<langsyntaxhighlight lang="bbcbasic"> n = 14
num = 1
last = (n^2 - n + 2) DIV 2
Line 1,461 ⟶ 1,587:
NEXT
PRINT
NEXT row</langsyntaxhighlight>
Output for n = 5:
<pre>
Line 1,487 ⟶ 1,613:
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
==={{header|Chipmunk Basic}}===
{{works with|Chipmunk Basic|3.6.4}}
{{works with|Applesoft BASIC}}
{{works with|BASICA}}
{{works with|GW-BASIC}}
{{works with|PC-BASIC}}
{{works with|QBasic}}
{{works with|QuickBasic}}
{{works with|Just BASIC}}
{{works with|Liberty BASIC}}
{{works with|Run BASIC}}
<syntaxhighlight lang="qbasic">100 CLS : REM 100 HOME for Applesoft BASIC
110 INPUT "Number of rows: "; ROWS
120 DIM COLSIZE(ROWS)
130 FOR COL = 1 TO ROWS
140 COLSIZE(COL) = LEN(STR$(COL + ROWS * (ROWS - 1) / 2))
150 NEXT
160 THISNUM = 1
170 FOR R = 1 TO ROWS
180 FOR COL = 1 TO R
190 PRINT RIGHT$(" " + STR$(THISNUM), COLSIZE(COL)); " ";
200 THISNUM = THISNUM + 1
210 NEXT
220 PRINT
230 NEXT
240 END</syntaxhighlight>
 
==={{header|Commodore BASIC}}===
<langsyntaxhighlight lang="basic">100 print chr$(14);chr$(147);"Floyd's triangle"
110 print "How many rows? ";
120 open 1,0:input#1,ro$:close 1:print
Line 1,507 ⟶ 1,660:
260 : print
270 next i
280 end</langsyntaxhighlight>
{{Out}}
<pre>Floyd's triangle
Line 1,532 ⟶ 1,685:
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
==={{header|GW-BASIC}}===
The [[#Chipmunk_Basic|Chipmunk Basic]] solution works without any changes.
 
==={{header|IS-BASIC}}===
{{incorrect|IS-BASIC|last line should only have one space between values}}
<langsyntaxhighlight ISlang="is-BASICbasic">100 PROGRAM "FloydT.bas"
110 LET N=14:LET J=1
120 TEXT 80
Line 1,543 ⟶ 1,699:
160 NEXT
170 PRINT
180 NEXT</langsyntaxhighlight>
 
==={{header|MasmBasic}}===
'''[http://www.webalice.it/jj2006/Masm32_Tips_Tricks_and_Traps.htm Builds with Masm, UAsm or AsmC plus the MasmBasic library]'''
<langsyntaxhighlight MasmBasiclang="masmbasic">include \masm32\MasmBasic\MasmBasic.inc
SetGlobals rows, columns, ct, maxrows=4
Init
Line 1,566 ⟶ 1,722:
.Until maxrows>13
Inkey
EndOfCode</langsyntaxhighlight>
 
{{out}}
<pre> 1
 
1
2 3
4 5 6
Line 1,591 ⟶ 1,744:
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
==={{header|MSX Basic}}===
The [[#Chipmunk_Basic|Chipmunk Basic]] solution works without any changes.
 
==={{header|QBasic}}===
<langsyntaxhighlight QBasiclang="qbasic">SUB FloydTriangle (fila)
DIM numColum(fila)
FOR colum = 1 TO fila
Line 1,612 ⟶ 1,768:
FloydTriangle (5)
PRINT
FloydTriangle (14)</langsyntaxhighlight>
 
==={{header|True BASIC}}===
{{trans|QBasic}}
<syntaxhighlight lang="qbasic">SUB floydtriangle (fila)
DIM numcolum(0)
MAT REDIM numcolum(fila)
FOR colum = 1 TO fila
LET numcolum(colum) = LEN(STR$(colum+fila*(fila-1)/2))
NEXT colum
PRINT "output for "; STR$(fila)
PRINT
LET thisnum = 1
FOR r = 1 TO fila
FOR colum = 1 TO r
PRINT (" " & STR$(thisnum))[LEN(" " & STR$(thisnum))-numcolum(colum)+1:maxnum]; " ";
LET thisnum = thisnum+1
NEXT colum
PRINT
NEXT r
END SUB
 
CALL FLOYDTRIANGLE (5)
PRINT
CALL FLOYDTRIANGLE (14)
END</syntaxhighlight>
 
==={{header|XBasic}}===
{{works with|Windows XBasic}}
<syntaxhighlight lang="qbasic">PROGRAM "Floyd's triangle"
VERSION "0.0001"
 
DECLARE FUNCTION Entry ()
DECLARE FUNCTION FloydTriangle (n)
 
FUNCTION Entry ()
FloydTriangle (5)
PRINT
FloydTriangle (14)
END FUNCTION
 
FUNCTION FloydTriangle (fila)
DIM numColum[fila]
FOR colum = 1 TO fila
t$ = STR$(colum + fila * (fila - 1) / 2)
numColum[colum] = LEN(t$)
NEXT colum
 
PRINT "output for "; STR$(fila)
PRINT
thisNum = 1
FOR r = 1 TO fila
FOR colum = 1 TO r
PRINT RIGHT$(" " + STR$(thisNum), numColum[colum]); " ";
INC thisNum
NEXT colum
PRINT
NEXT r
END FUNCTION
END PROGRAM</syntaxhighlight>
 
==={{header|Yabasic}}===
<langsyntaxhighlight lang="freebasic">sub FloydTriangle (fila)
dim numColum(fila)
for colum = 1 to fila
Line 1,634 ⟶ 1,849:
FloydTriangle (5)
print
FloydTriangle (14)</langsyntaxhighlight>
 
=={{header|Batch File}}==
{{trans|QBasic}}
<langsyntaxhighlight lang="dos">:: Floyd's triangle Task from Rosetta Code
:: Batch File Implementation
 
Line 1,676 ⟶ 1,891:
echo(!printLine!
)
goto :EOF</langsyntaxhighlight>
{{out}}
<pre>Output for 5
Line 1,702 ⟶ 1,917:
 
=={{header|BCPL}}==
<langsyntaxhighlight lang="bcpl">get "libhdr"
 
let width(n) = n<10 -> 1, 1 + width(n/10)
Line 1,722 ⟶ 1,937:
wrch('*N')
floyd(14)
$)</langsyntaxhighlight>
{{out}}
<pre> 1
Line 1,747 ⟶ 1,962:
=={{header|Befunge}}==
 
<langsyntaxhighlight Befungelang="befunge">0" :seniL">:#,_&>:!#@_55+,:00p::1+*2/1v
vv+1:\-1p01g5-\g00<v`*9"o"\+`"c"\`9:::_
$>>\:::9`\"c"`+\9v:>>+00g1-:00p5p1-00g^
<v\*84-\g01+`*"o"<^<<p00:+1\+1/2*+1:::\
^>:#\1#,-#:\_$$.\:#^_$$>>1+\1-55+,:!#@_</langsyntaxhighlight>
 
{{out}}
Line 1,780 ⟶ 1,995:
 
=={{header|Bracmat}}==
<langsyntaxhighlight lang="bracmat"> ( ( floyd
= lowerLeftCorner lastInColumn lastInRow row i W w
. put$(str$("Floyd " !arg ":\n"))
Line 1,805 ⟶ 2,020:
& floyd$5
& floyd$14
);</langsyntaxhighlight>
Output:
<pre>Floyd 5:
Line 1,830 ⟶ 2,045:
 
=={{header|C}}==
<langsyntaxhighlight lang="c">#include <stdio.h>
 
void t(int n)
Line 1,891 ⟶ 2,106:
// t(10000);
return 0;
}</langsyntaxhighlight>
Output identical to D's.
 
=={{header|C sharp|C#}}==
{{Trans|Perl}}
<langsyntaxhighlight lang="csharp">using System;
using System.Text;
 
Line 1,941 ⟶ 2,156:
return output.ToString();
}
}</langsyntaxhighlight>
 
=={{header|C++}}==
<langsyntaxhighlight lang="cpp">
#include <windows.h>
#include <sstream>
Line 2,027 ⟶ 2,242:
return 0;
}
//--------------------------------------------------------------------------------------------------</langsyntaxhighlight>
{{out}}
<pre>Floyd's Triangle - 5 rows
Line 2,057 ⟶ 2,272:
=={{header|Clojure}}==
I didn't translete this, it's from my own creation.
<langsyntaxhighlight lang="clojure">
(defn TriangleList [n]
(let [l (map inc (range))]
Line 2,075 ⟶ 2,290:
e (map #(map (fn [x] (str " " x)) %) l)]
(map #(println (apply str %)) e)))
</syntaxhighlight>
</lang>
By Average-user.
 
Line 2,105 ⟶ 2,320:
 
=={{header|CLU}}==
<langsyntaxhighlight lang="clu">floyd = cluster is triangle
rep = null
Line 2,136 ⟶ 2,351:
stream$putl(po, floyd$triangle(5))
stream$putl(po, floyd$triangle(14))
end start_up</langsyntaxhighlight>
{{out}}
<pre> 1
Line 2,160 ⟶ 2,375:
 
=={{header|COBOL}}==
<langsyntaxhighlight lang="cobol"> IDENTIFICATION DIVISION.
PROGRAM-ID. FLOYD-TRIANGLE.
Line 2,228 ⟶ 2,443:
MOVE CUR-NUM TO THREE-DIGITS.
STRING THREE-DIGITS DELIMITED BY SIZE INTO OUT-LINE
WITH POINTER LINE-PTR.</langsyntaxhighlight>
{{out}}
<pre> 1
Line 2,253 ⟶ 2,468:
=={{header|CoffeeScript}}==
{{trans|Kotlin}}
<langsyntaxhighlight lang="coffeescript">triangle = (array) -> for n in array
console.log "#{n} rows:"
printMe = 1
Line 2,272 ⟶ 2,487:
printMe++
 
triangle [5, 14]</langsyntaxhighlight>
Output as Kotlin.
 
=={{header|Common Lisp}}==
===Version 1===
<langsyntaxhighlight lang="lisp">;;;using flet to define local functions and storing precalculated column widths in array
;;;verbose, but more readable and efficient than version 2
 
Line 2,293 ⟶ 2,508:
(dotimes (col (+ 1 row))
(format t "~vd " (aref column-widths col)(+ col (lazycat row))))
(format t "~%")))))</langsyntaxhighlight>
 
===Version 2 - any base===
<langsyntaxhighlight lang="lisp">;;; more concise than version 1 but less efficient for a large triangle
;;;optional "base" parameter will allow use of any base from 2 to 36
 
Line 2,303 ⟶ 2,518:
(dotimes (column (+ 1 row))
(format t "~v,vr " base (length (format nil "~vr" base (+ column (/ (+ (expt (- rows 1) 2) (- rows 1) 2) 2)))) (+ column (/ (+ (expt row 2) row 2) 2))))
(format t "~%")))</langsyntaxhighlight>
 
{{out}}
Line 2,355 ⟶ 2,570:
 
=={{header|Cowgol}}==
<langsyntaxhighlight lang="cowgol">include "cowgol.coh";
 
sub width(n: uint16): (w: uint8) is
Line 2,392 ⟶ 2,607:
floyd(5);
print_nl();
floyd(14);</langsyntaxhighlight>
{{out}}
<pre> 1
Line 2,415 ⟶ 2,630:
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
=={{header|D}}==
<langsyntaxhighlight lang="d">import std.stdio, std.conv;
 
void floydTriangle(in uint n) {
Line 2,430 ⟶ 2,645:
floydTriangle(5);
floydTriangle(14);
}</langsyntaxhighlight>
{{out}}
<pre> 1
Line 2,451 ⟶ 2,666:
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|Delphi}}==
{{works with|Delphi|6.0}}
{{libheader|SysUtils,StdCtrls}}
 
 
<syntaxhighlight lang="Delphi">
procedure FloydsTriangle(Memo: TMemo; Rows: integer);
var I,R,C: integer;
var S: string;
begin
I:=1;
S:='';
for R:=1 to Rows do
begin
for C:=1 to R do
begin
S:=S+Format('%4d',[I]);
Inc(I);
end;
S:=S+#$0D#$0A;
end;
Memo.Lines.Add(S);
end;
 
 
procedure ShowFloydsTriangles(Memo: TMemo);
begin
FloydsTriangle(Memo,5);
FloydsTriangle(Memo,14);
end;
 
 
</syntaxhighlight>
{{out}}
<pre>
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
 
=={{header|Draco}}==
<syntaxhighlight lang="draco">proc width(word n) word:
word w;
w := 0;
while n>0 do
w := w + 1;
n := n / 10
od;
w
corp
 
proc floyd(word rows) void:
word n, row, col, maxno;
maxno := rows * (rows+1)/2;
n := 1;
for row from 1 upto rows do
for col from 1 upto row do
write(n : 1+width(maxno - rows + col));
n := n+1
od;
writeln()
od
corp
 
proc main() void:
floyd(5);
writeln();
floyd(14)
corp</syntaxhighlight>
{{out}}
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|EasyLang}}==
{{trans|Java}}
<syntaxhighlight>
func ceil h .
f = floor h
if h <> f
f += 1
.
return f
.
proc triangle n . .
print n & " rows:"
row = 1
while row <= n
printme += 1
cols = ceil log10 (n * (n - 1) / 2 + nprinted + 2)
numfmt 0 cols
write printme & " "
nprinted += 1
if nprinted = row
print ""
row += 1
nprinted = 0
.
.
print ""
.
triangle 5
triangle 14
</syntaxhighlight>
{{out}}
<pre>
5 rows:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
14 rows:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
=={{header|Elixir}}==
<langsyntaxhighlight lang="elixir">defmodule Floyd do
def triangle(n) do
max = trunc(n * (n + 1) / 2)
Line 2,470 ⟶ 2,850:
 
Floyd.triangle(5)
Floyd.triangle(14)</langsyntaxhighlight>
 
{{out}}
Line 2,496 ⟶ 2,876:
 
=={{header|Erlang}}==
<langsyntaxhighlight lang="erlang">
-module( floyds_triangle ).
 
Line 2,541 ⟶ 2,921:
 
strings_from_integers( Integers ) -> [erlang:integer_to_list(X) || X <- Integers].
</syntaxhighlight>
</lang>
{{out}}
<pre>
Line 2,566 ⟶ 2,946:
 
=={{header|ERRE}}==
<syntaxhighlight lang="erre">
<lang ERRE>
PROGRAM FLOYD
 
Line 2,587 ⟶ 2,967:
END FOR
END PROGRAM
</syntaxhighlight>
</lang>
Example for n=14
{{out}}
Line 2,615 ⟶ 2,995:
 
{{Works with|Office 365 betas 2021}}
<langsyntaxhighlight lang="lisp">floydTriangle
=LAMBDA(n,
IF(0 < n,
Line 2,636 ⟶ 3,016:
""
)
)</langsyntaxhighlight>
 
{{Out}}
Line 3,004 ⟶ 3,384:
 
=={{header|F_Sharp|F#}}==
<langsyntaxhighlight lang="fsharp">open System
 
[<EntryPoint>]
Line 3,023 ⟶ 3,403:
printf "%s%d" pad value
printfn ""
0</langsyntaxhighlight>
Output for 5 and 14 (via command line argument)
<pre style="float:left"> 1
Line 3,046 ⟶ 3,426:
 
=={{header|Factor}}==
<langsyntaxhighlight lang="factor">USING: io kernel math math.functions math.ranges prettyprint
sequences ;
IN: rosetta-code.floyds-triangle
Line 3,059 ⟶ 3,439:
] each nl 3drop ;
 
5 14 [ floyd. ] bi@</langsyntaxhighlight>
{{out}}
<pre>
Line 3,085 ⟶ 3,465:
 
=={{header|Forth}}==
<langsyntaxhighlight lang="forth">: lastn ( rows -- n ) dup 1- * 2/ ;
: width ( n -- n ) s>f flog ftrunc f>s 2 + ;
 
Line 3,099 ⟶ 3,479:
loop
2drop ;
</syntaxhighlight>
</lang>
 
=={{header|Fortran}}==
 
Please find compilation instructions on GNU/linux system at the beginning of the source. There, also, are the example output triangles produced by running the program. The environment variable setting and command line argument are vestigial. Ignore them. The code demonstrates writing to an in memory buffer, an old feature of FORTRAN.
<syntaxhighlight lang="fortran">
<lang FORTRAN>
!-*- mode: compilation; default-directory: "/tmp/" -*-
!Compilation started at Tue May 21 22:55:08
Line 3,168 ⟶ 3,548:
end program p
</syntaxhighlight>
</lang>
 
=={{header|FreeBASIC}}==
<langsyntaxhighlight lang="freebasic">' version 19-09-2015
' compile with: fbc -s console
 
Line 3,223 ⟶ 3,603:
Print : Print "hit any key to end program"
Sleep
End</langsyntaxhighlight>
{{out}}
<pre>output for 5 output for 14
Line 3,244 ⟶ 3,624:
=={{header|Gambas}}==
'''[https://gambas-playground.proko.eu/?gist=57ab1f58785b7e07765881657e4589ab Click this link to run this code]'''
<langsyntaxhighlight lang="gambas">Public Sub Main()
Dim siCount, siNo, siCounter As Short
Dim siLine As Short = 1
Line 3,268 ⟶ 3,648:
Next
 
End</langsyntaxhighlight>
Output:
<pre>
Line 3,296 ⟶ 3,676:
 
=={{header|Go}}==
<langsyntaxhighlight lang="go">package main
 
import "fmt"
Line 3,322 ⟶ 3,702:
}
}
}</langsyntaxhighlight>
{{out}}
<pre>
Line 3,350 ⟶ 3,730:
=={{header|Groovy}}==
{{trans|Java}}
<langsyntaxhighlight lang="groovy">class Floyd {
static void main(String[] args) {
printTriangle(5)
Line 3,370 ⟶ 3,750:
}
}
}</langsyntaxhighlight>
{{out}}
<pre>5 rows:
Line 3,395 ⟶ 3,775:
 
=={{header|Haskell}}==
<langsyntaxhighlight lang="haskell">--------------------- FLOYDS TRIANGLE --------------------
 
floydTriangle :: [[Int]]
Line 3,426 ⟶ 3,806:
. length
)
. show</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 3,452 ⟶ 3,832:
Or, simplifying a little by delegating the recursion scheme to '''mapAccumL'''
 
<langsyntaxhighlight lang="haskell">import Control.Monad ((>=>))
import Data.List (mapAccumL)
 
Line 3,480 ⟶ 3,860:
)
x
)</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 3,505 ⟶ 3,885:
 
Or, defining just the relationship between successive terms:
<langsyntaxhighlight lang="haskell">----------------- LINES OF FLOYDS TRIANGLE ---------------
 
floyds :: [[Int]]
Line 3,526 ⟶ 3,906:
mapM_ print $ take 5 floyds
putStrLn ""
mapM_ print $ take 14 floyds</langsyntaxhighlight>
{{Out}}
<pre>[1]
Line 3,552 ⟶ 3,932:
Or as a partially populated matrix:
 
<langsyntaxhighlight lang="haskell">import Control.Monad (join)
import Data.Matrix (Matrix, getElem, matrix, nrows, toLists)
 
Line 3,583 ⟶ 3,963:
 
padRight :: Int -> String -> String
padRight n = (drop . length) <*> (replicate n ' ' <>)</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 3,609 ⟶ 3,989:
 
The following solution works in both languages:
<langsyntaxhighlight lang="unicon">procedure main(a)
n := integer(a[1]) | 5
w := ((n*(n-1))/2)-n
Line 3,620 ⟶ 4,000:
write()
}
end</langsyntaxhighlight>
 
Sample outputs:
Line 3,656 ⟶ 4,036:
Note: <code>require 'strings'</code> does nothing in J7, but is harmless (strings is already incorporated in J7).
 
<langsyntaxhighlight Jlang="j">require 'strings'
floyd=: [: rplc&(' 0';' ')"1@":@(* ($ $ +/\@,)) >:/~@:i.</langsyntaxhighlight>
 
Note, the parenthesis around ($ $ +/\@,) is optional, and only included for emphasis.
Line 3,663 ⟶ 4,043:
Example use:
 
<langsyntaxhighlight Jlang="j"> floyd 5
1
2 3
Line 3,683 ⟶ 4,063:
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</langsyntaxhighlight>
 
How it works:
Line 3,695 ⟶ 4,075:
Efficiency note: In a measurement of time used: in floyd 100, 80% the time here goes into the string manipulations -- sequential additions and multiplications are cheap. In floyd 1000 this jumps to 98% of the time. Here's a faster version (about 3x on floyd 1000) courtesy of Aai of the J forums:
 
<langsyntaxhighlight Jlang="j">floyd=: [: ({.~ i.&1@E.~&' 0')"1@":@(* ($ $ +/\@,)) >:/~@:i.</langsyntaxhighlight>
 
=={{header|Java}}==
<langsyntaxhighlight lang="java">
public class Floyd {
public static void main(String[] args){
Line 3,718 ⟶ 4,098:
}
}
}</langsyntaxhighlight>
Output:
<pre>5 rows:
Line 3,750 ⟶ 4,130:
:#and a mapping of that expression to a formatted string.
 
<langsyntaxhighlight JavaScriptlang="javascript">(function () {
'use strict';
 
Line 3,870 ⟶ 4,250:
return showFloyd(floyd(n)) + '\n';
}, [5, 14]));
})();</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 3,895 ⟶ 4,275:
===ES6===
{{Trans|Haskell}} (mapAccumL version)
<langsyntaxhighlight JavaScriptlang="javascript">(() => {
'use strict';
 
Line 3,991 ⟶ 4,371:
 
return unlines(map(n => showFloyd(floyd(n)) + '\n', [5, 14]))
})();</langsyntaxhighlight>
{{Out}}
<pre> 1
Line 4,018 ⟶ 4,398:
(Used TCL example as a starting point.)
 
<langsyntaxhighlight lang="javascript">#!/usr/bin/env js
 
function main() {
Line 4,053 ⟶ 4,433:
}
 
main();</langsyntaxhighlight>
 
{{out}}
Line 4,080 ⟶ 4,460:
 
=={{header|jq}}==
<langsyntaxhighlight lang="jq"># floyd(n) creates an n-row floyd's triangle
def floyd(n):
def lpad(len): tostring | (((len - length) * " ") + .);
Line 4,102 ⟶ 4,482:
| [ ($i + $row),
($string + "\n" + line($i; $row + 1; $widths )) ] )
| .[1] ) ;</langsyntaxhighlight>
'''Task:'''
<langsyntaxhighlight lang="jq">(5,14) | "floyd(\(.)): \(floyd(.))\n"</langsyntaxhighlight>
{{out}}
<langsyntaxhighlight lang="sh">$ jq -M -r -n -f floyds_triangle.jq > floyds_triangle.out
floyd(5):
1
Line 4,128 ⟶ 4,508:
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105 </langsyntaxhighlight>
 
=={{header|Julia}}==
<langsyntaxhighlight lang="julia">function floydtriangle(rows)
r = collect(1:div(rows *(rows + 1), 2))
for i in 1:rows
Line 4,143 ⟶ 4,523:
floydtriangle(5); println(); floydtriangle(14)
 
</langsyntaxhighlight>{{out}}
<pre>
1
Line 4,169 ⟶ 4,549:
=={{header|Kotlin}}==
{{trans|Java}}
<langsyntaxhighlight lang="scala">fun main(args: Array<String>) = args.forEach { Triangle(it.toInt()) }
 
internal class Triangle(n: Int) {
Line 4,184 ⟶ 4,564:
}
}
}</langsyntaxhighlight>
Output as Java.
 
=={{header|Lasso}}==
{{Output?|Lasso|There should only be one space between the numbers on the last row.}}
<langsyntaxhighlight Lassolang="lasso">define floyds_triangle(n::integer) => {
local(out = array(array(1)),comp = array, num = 1)
while(#out->size < #n) => {
Line 4,212 ⟶ 4,592:
floyds_triangle(5)
'\r\r'
floyds_triangle(14)</langsyntaxhighlight>
{{out}}
<pre> 1
Line 4,236 ⟶ 4,616:
 
=={{header|Liberty BASIC}}==
<langsyntaxhighlight lang="lb">input "Number of rows needed:- "; rowsNeeded
 
dim colWidth(rowsNeeded) ' 5 rows implies 5 columns
Line 4,252 ⟶ 4,632:
next
print
next</langsyntaxhighlight>
{{out}}
<pre>Number of rows needed:- 5
Line 4,278 ⟶ 4,658:
 
=={{header|Lua}}==
<langsyntaxhighlight lang="lua">function print_floyd(rows)
local c = 1
local h = rows*(rows-1)/2
Line 4,296 ⟶ 4,676:
 
print_floyd(5)
print_floyd(14)</langsyntaxhighlight>
 
Output:
Line 4,321 ⟶ 4,701:
 
=={{header|Maple}}==
<langsyntaxhighlight lang="maple">floyd := proc(rows)
local num, numRows, numInRow, i, digits;
digits := Array([]);
Line 4,351 ⟶ 4,731:
 
floyd(5);
floyd(14);</langsyntaxhighlight>
{{out}}
<pre>
Line 4,376 ⟶ 4,756:
 
=={{header|Mathematica}} / {{header|Wolfram Language}}==
<syntaxhighlight lang="mathematica">
<lang Mathematica>
f=Function[n,
Most/@(Range@@@Partition[FindSequenceFunction[{1,2,4,7,11}]/@Range[n+1],2,1])]
TableForm[f@5,TableAlignments->Right,TableSpacing->{1,1}]
TableForm[f@14,TableAlignments->Right,TableSpacing->{1,1}]
</syntaxhighlight>
</lang>
Output:
<pre>
Line 4,407 ⟶ 4,787:
=={{header|MATLAB}} / {{header|Octave}}==
 
<langsyntaxhighlight Matlablang="matlab">function floyds_triangle(n)
s = 1;
for k = 1 : n
disp(s : s + k - 1)
s = s + k;
end</langsyntaxhighlight>
{{out}}:
<pre>
Line 4,423 ⟶ 4,803:
</pre>
 
=={{header|Maxima}}==
<syntaxhighlight lang="maxima">
floyd_t(m):=block(
t:m*(m+1)/2,
L1:makelist(makelist(k,k,1,t),j,0,m),
L2:makelist(rest(L1[i],((i-1)^2+(i-1))/2),i,1,m+1),
makelist(firstn(L2[i],i),i,1,m),
table_form(%%))$
 
/* Test cases */
floyd_t(5);
floyd_t(14);
</syntaxhighlight>
[[File:FloydTriangleMaxima5.png|thumb|center]]
[[File:FloydTriangleMaxima14.png|thumb|center]]
 
=={{header|Miranda}}==
<Syntaxhighlight lang="miranda">main :: [sys_message]
main = [Stdout (lay (map floyd [5, 14]))]
 
floyd :: num->[char]
floyd n = lay (map fmt rws)
where rws = rows n
cws = map ((+1).width) (last rws)
fmt rw = concat (map (uncurry rjust) (zip2 cws rw))
 
 
rows :: num->[[num]]
rows n = rows' [1..n] [1..]
where rows' [] ns = []
rows' (l:ls) ns = row : rows' ls rest
where (row, rest) = split l ns
 
split :: num->[*]->([*],[*])
split n ls = (take n ls, drop n ls)
 
rjust :: num->num->[char]
rjust w n = reverse (take w (reverse (show n) ++ repeat ' '))
 
width :: num->num
width = (#) . show
 
uncurry :: (*->**->***)->(*,**)->***
uncurry f (a,b) = f a b</syntaxhighlight>
{{out}}
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
=={{header|Modula-2}}==
<langsyntaxhighlight lang="modula2">MODULE FloydTriangle;
FROM FormatString IMPORT FormatString;
FROM Terminal IMPORT WriteString,WriteLn,ReadChar;
Line 4,460 ⟶ 4,906:
 
ReadChar
END FloydTriangle.</langsyntaxhighlight>
{{out}}
<pre> 1
Line 4,487 ⟶ 4,933:
===Version 1===
{{Trans|REXX}}
<langsyntaxhighlight NetRexxlang="netrexx">/* NetRexx */
options replace format comments java crossref symbols binary
/* REXX ***************************************************************
Line 4,514 ⟶ 4,960:
end i
Say ll -- output last line
</syntaxhighlight>
</lang>
'''Output:
<pre>
Line 4,544 ⟶ 4,990:
===Version 2===
{{Trans|REXX}}
<langsyntaxhighlight NetRexxlang="netrexx">/* NetRexx */
options replace format comments java crossref symbols binary
/*REXX program constructs & displays Floyd's triangle for any number of rows.*/
Line 4,563 ⟶ 5,009:
say output
end row
</syntaxhighlight>
</lang>
 
'''Output:
Line 4,595 ⟶ 5,041:
=={{header|Nim}}==
{{trans|Python}}
<langsyntaxhighlight lang="nim">import strutils
 
proc floyd(rowcount = 5): seq[seq[int]] =
Line 4,616 ⟶ 5,062:
for i in [5, 14]:
pfloyd(floyd(i))
echo ""</langsyntaxhighlight>
Output:
<pre> 1
Line 4,641 ⟶ 5,087:
=={{header|OCaml}}==
 
<langsyntaxhighlight lang="ocaml">let ( |> ) f g x = g (f x)
let rec last = function x::[] -> x | _::tl -> last tl | [] -> raise Not_found
let rec list_map2 f l1 l2 =
Line 4,666 ⟶ 5,112:
 
let () =
print_floyd (floyd (int_of_string Sys.argv.(1)))</langsyntaxhighlight>
 
=={{header|OxygenBasic}}==
{{output?|OxygenBasic}}
<langsyntaxhighlight lang="oxygenbasic">
function Floyd(sys n) as string
sys i,t
Line 4,698 ⟶ 5,144:
 
putfile "s.txt",Floyd(5)+floyd(14)
</syntaxhighlight>
</lang>
 
=={{header|PARI/GP}}==
<langsyntaxhighlight lang="parigp">{floyd(m)=my(lastrow_a,lastrow_e,lastrow_len=m,fl,idx);
\\ +++ fl is a vector of fieldlengths in the last row
lastrow_e=m*(m+1)/2;lastrow_a=lastrow_e+1-m;
Line 4,718 ⟶ 5,164:
floyd(5)
floyd(14)
</syntaxhighlight>
</lang>
{{out}}
<pre>
Line 4,744 ⟶ 5,190:
=={{header|Pascal}}==
{{works with|Free_Pascal}}
<langsyntaxhighlight lang="pascal">Program FloydDemo (input, output);
 
function digits(number: integer): integer;
Line 4,798 ⟶ 5,244:
writeln ('*** Floyd 14 ***');
floyd2(14);
end.</langsyntaxhighlight>
Output:
<pre>% ./Floyd
Line 4,826 ⟶ 5,272:
=={{header|Perl}}==
{{Trans|NetRexx}}
<langsyntaxhighlight lang="perl">#!/usr/bin/env perl
use strict;
use warnings;
Line 4,860 ⟶ 5,306:
0;
__END__
</syntaxhighlight>
</lang>
'''Output:
<pre>
Line 4,890 ⟶ 5,336:
 
=={{header|Phix}}==
<!--<langsyntaxhighlight Phixlang="phix">(phixonline)-->
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #008080;">procedure</span> <span style="color: #000000;">Floyds_triangle</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">)</span>
Line 4,909 ⟶ 5,355:
<span style="color: #000000;">Floyds_triangle</span><span style="color: #0000FF;">(</span><span style="color: #000000;">5</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">Floyds_triangle</span><span style="color: #0000FF;">(</span><span style="color: #000000;">14</span><span style="color: #0000FF;">)</span>
<!--</langsyntaxhighlight>-->
{{out}}
<pre style="float:left">
Line 4,937 ⟶ 5,383:
=={{header|PHP}}==
 
<langsyntaxhighlight lang="php">
<?php
floyds_triangle(5);
Line 4,955 ⟶ 5,401:
}
?>
</syntaxhighlight>
</lang>
{{out}}
<pre>
Line 4,983 ⟶ 5,429:
=={{header|Picat}}==
===List comprehension===
<langsyntaxhighlight Picatlang="picat">import util.
 
% Calculate the numbers first and then format them
Line 4,989 ⟶ 5,435:
M = [[J+SS : J in 1..I] : I in 1..N, SS=sum(1..I-1)],
S = [slice(SS,2) : Row in M, SS = [to_fstring(to_fstring("%%%dd",M[N,I].to_string().length+1),E) :
{E,I} in zip(Row,1..Row.length)].join('')].join("\n").</langsyntaxhighlight>
 
===Loop based===
{{trans|Prolog}}
Picat doesn't support all of SWI-Prolog's nifty format options so we have to tweak a bit.
<syntaxhighlight lang="picat">
<lang Picat>
floyd2(N) = S =>
S = [],
Line 5,006 ⟶ 5,452:
end,
S := S ++ slice(SS,2) ++ "\n"
end.</langsyntaxhighlight>
 
===Test===
<syntaxhighlight lang="picat">
<lang Picat>
go =>
println("N=5:"),
Line 5,016 ⟶ 5,462:
println("N=14:"),
println(floyd2(14)),
nl.</langsyntaxhighlight>
 
{{out}}
Line 5,044 ⟶ 5,490:
=={{header|PicoLisp}}==
===Calculate widths relative to lower left corner===
<langsyntaxhighlight PicoLisplang="picolisp">(de floyd (N)
(let LLC (/ (* N (dec N)) 2)
(for R N
Line 5,052 ⟶ 5,498:
(length (+ LLC C))
(+ C (/ (* R (dec R)) 2)) ) )
(if (= C R) (prinl) (space)) ) ) ) )</langsyntaxhighlight>
===Pre-calculate all rows, and take format from last one===
<langsyntaxhighlight PicoLisplang="picolisp">(de floyd (N)
(let
(Rows
Line 5,063 ⟶ 5,509:
(map inc (cdr Fmt))
(for R Rows
(apply tab R Fmt) ) ) )</langsyntaxhighlight>
Output in both cases:
<pre>: (floyd 5)
Line 5,089 ⟶ 5,535:
 
=={{header|PL/I}}==
<langsyntaxhighlight lang="pli">(fofl, size):
floyd: procedure options (main); /* Floyd's Triangle. Wiki 12 July 2012 */
 
Line 5,105 ⟶ 5,551:
end;
 
end floyd;</langsyntaxhighlight>
 
{{out}}
Line 5,135 ⟶ 5,581:
991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
</pre>
 
=={{header|PL/M}}==
<syntaxhighlight lang="plm">100H:
BDOS: PROCEDURE (FN, ARG); DECLARE FN BYTE, ARG ADDRESS; GO TO 5; END BDOS;
EXIT: PROCEDURE; GO TO 0; END EXIT;
PRINT: PROCEDURE (S); DECLARE S ADDRESS; CALL BDOS(9,S); END PRINT;
 
 
PUT$NUM: PROCEDURE (N, WIDTH);
DECLARE S (6) BYTE INITIAL (' $');
DECLARE N ADDRESS, (I, WIDTH) BYTE;
I = 5;
DIGIT:
S(I := I-1) = N MOD 10 + '0';
IF (N := N/10) > 0 THEN GO TO DIGIT;
DO I=I-1 TO 0 BY -1;
S(I) = ' ';
END;
CALL PRINT(.S(6-WIDTH));
END PUT$NUM;
 
WIDTH: PROCEDURE (N) BYTE;
DECLARE (N, W) BYTE;
W = 1;
DO WHILE N>0;
N = N/10;
W = W+1;
END;
RETURN W;
END WIDTH;
 
FLOYD: PROCEDURE (ROWS);
DECLARE (ROWS, ROW, COL) BYTE;
DECLARE (N, MAXNO) ADDRESS;
 
MAXNO = ROWS * (ROWS+1)/2;
N = 1;
DO ROW = 1 TO ROWS;
DO COL = 1 TO ROW;
CALL PUT$NUM(N, 1 + WIDTH(MAXNO - ROWS + COL));
N = N+1;
END;
CALL PRINT(.(13,10,'$'));
END;
END FLOYD;
 
CALL FLOYD(5);
CALL PRINT(.(13,10,'$'));
CALL FLOYD(14);
CALL EXIT;
EOF</syntaxhighlight>
{{out}}
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
11
12 13
14 15 16
17 18 19 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|Prolog}}==
Works with SWI-Prolog version 6.5.3
<langsyntaxhighlight Prologlang="prolog">floyd(N) :-
forall(between(1, N, I),
( forall(between(1,I, J),
Line 5,151 ⟶ 5,669:
get_column(Last, C) :-
name(Last, N1), length(N1,C).
</syntaxhighlight>
</lang>
Output :
<pre> ?- floyd(5).
Line 5,181 ⟶ 5,699:
=={{header|PureBasic}}==
 
<langsyntaxhighlight PureBasiclang="purebasic">Procedure.i sumTo(n)
Protected r,i
For i=1 To n
Line 5,230 ⟶ 5,748:
Print(#crlf$ + #crlf$ + "Press ENTER to exit"): Input()
CloseConsole()
EndIf</langsyntaxhighlight>
 
'''Sample Output'''
Line 5,257 ⟶ 5,775:
=={{header|Python}}==
===Procedural===
<langsyntaxhighlight lang="python">>>> def floyd(rowcount=5):
rows = [[1]]
while len(rows) < rowcount:
Line 5,298 ⟶ 5,816:
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
>>> </langsyntaxhighlight>
 
===Functional===
Line 5,304 ⟶ 5,822:
Using the mathematical formula for each row directly,
either in a list comprehension:
<langsyntaxhighlight lang="python">def floyd(rowcount=5):
return [list(range(i * (i - 1) // 2 + 1, i * (i + 1) // 2 + 1))
for i in range(1, rowcount + 1)]</langsyntaxhighlight>
 
or in terms of concatMap:
{{Works with|Python|3}}
<langsyntaxhighlight lang="python">'''Floyd triangle in terms of concatMap'''
 
from itertools import chain
Line 5,381 ⟶ 5,899:
 
if __name__ == '__main__':
main()</langsyntaxhighlight>
 
Or alternatively, defining just the relationship between successive terms:
{{Works with|Python|3}}
<langsyntaxhighlight lang="python">'''Floyd triangle in terms of iterate(f)(x)'''
 
from itertools import islice
Line 5,478 ⟶ 5,996:
# MAIN ----------------------------------------------------
if __name__ == '__main__':
main()</langsyntaxhighlight>
{{Out}}
<pre>[1]
Line 5,487 ⟶ 6,005:
 
=={{header|q}}==
<syntaxhighlight lang="q">
<lang q>
floyd:{n:1+ til sum 1+til x;
t:d:0;
Line 5,499 ⟶ 6,017:
floyd[5]
floyd2[14]</langsyntaxhighlight>
{{out}}
<pre>
Line 5,527 ⟶ 6,045:
=={{header|Quackery}}==
 
<langsyntaxhighlight Quackerylang="quackery"> [ dup 1+ * 2 / ] is triangulared ( n --> n )
 
[ number$ tuck size -
Line 5,543 ⟶ 6,061:
5 floyd
cr
14 floyd</langsyntaxhighlight>
 
{{out}}
Line 5,572 ⟶ 6,090:
=={{header|R}}==
If it weren't for the printing requirements, we could do this in one line.
<langsyntaxhighlight lang="rsplus">Floyd <- function(n)
{
#The first argument of the seq call is a well-known formula for triangle numbers.
Line 5,580 ⟶ 6,098:
}
Floyd(5)
Floyd(14)</langsyntaxhighlight>
{{out}}
<pre>
Line 5,605 ⟶ 6,123:
 
=={{header|Racket}}==
<langsyntaxhighlight lang="racket">
#lang racket
(require math)
Line 5,624 ⟶ 6,142:
(floyd 5)
(floyd 14)
</syntaxhighlight>
</lang>
Output:
<pre>
Line 5,651 ⟶ 6,169:
(formerly Perl 6)
Here's two ways of doing it.
<syntaxhighlight lang="raku" perl6line>constant @floyd1 = (1..*).rotor(1..*);
constant @floyd2 = gather for 1..* -> $s { take [++$ xx $s] }
 
Line 5,665 ⟶ 6,183:
say format-rows(@floyd1[^5]);
say '';
say format-rows(@floyd2[^14]);</langsyntaxhighlight>
{{out}}
<pre> 1
Line 5,688 ⟶ 6,206:
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|Refal}}==
<syntaxhighlight lang="refal">$ENTRY Go {
= <Prout <Floyd 5>>
<Prout <Floyd 14>>;
};
 
Floyd {
s.N, <Rows s.N>: e.Rows,
e.Rows: e.X (e.MaxRow),
<Each Width e.MaxRow>: e.ColWidths =
<Each ((e.ColWidths)) FormatRow e.Rows>;
}
 
FormatRow {
(e.W) () = '\n';
(s.W e.WS) (s.C e.CS) = <Cell <+ 1 s.W> s.C> <FormatRow (e.WS) (e.CS)>;
};
 
Cell {
s.Width s.N, <Repeat s.Width ' '> <Symb s.N>: e.Rfill,
<Last s.Width e.Rfill>: (e.X) e.Cell = e.Cell;
}
 
Rows {
s.Rows = <Rows s.Rows 1 1>;
s.Rows s.Row s.N, <+ s.Rows 1>: s.Row = ;
s.Rows s.Row s.N, <+ s.N s.Row>: s.Next =
(<Row s.N <- s.Next 1>>)
<Rows s.Rows <+ s.Row 1> s.Next>;
}
 
Row {
s.To s.To = s.To;
s.From s.To = s.From <Row <+ s.From 1> s.To>;
};
 
Each {
s.F e.X = <Each () s.F e.X>;
(e.Arg) s.F = ;
(e.Arg) s.F t.I e.X = <Mu s.F e.Arg t.I> <Each (e.Arg) s.F e.X>;
};
 
Width {
s.N, <Symb s.N>: e.X, <Lenw e.X>: s.Width e.X = s.Width;
};
 
Repeat {
0 s.X = ;
s.N s.X = s.X <Repeat <- s.N 1> s.X>;
};</syntaxhighlight>
{{out}}
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
=={{header|REXX}}==
===version 1===
<langsyntaxhighlight lang="rexx">
/* REXX ***************************************************************
* Parse Arg rowcount
Line 5,713 ⟶ 6,302:
end
Say ll /* output last line */
</syntaxhighlight>
</lang>
Output:
<pre>
Line 5,742 ⟶ 6,331:
===version 2, simple formula===
This REXX version uses a simple formula to calculate the maximum value (triangle element) displayed.
<langsyntaxhighlight lang="rexx">/*REXX program constructs & displays Floyd's triangle for any number of specified rows.*/
parse arg N .; if N=='' | N=="," then N= 5 /*Not specified? Then use the default.*/
mx= N * (N+1) % 2 - N /*calculate the maximum of any value. */
Line 5,752 ⟶ 6,341:
end /*#*/ /*calculate the max length on the fly. */
say substr(_, 2) /*remove 1st leading blank in the line.*/
end /*r*/ /*stick a fork in it, we're all done. */</langsyntaxhighlight>
{{out|output|text=&nbsp; when using the default input:}}
<pre>
Line 5,789 ⟶ 6,378:
 
===version 3, hexadecimal===
<langsyntaxhighlight lang="rexx">/*REXX program constructs & displays Floyd's triangle for any number of rows in base 16.*/
parse arg N .; if N=='' | N=="," then N=6 /*Not specified? Then use the default.*/
mx=N * (N+1) % 2 - N /*calculate maximum value of any value.*/
Line 5,799 ⟶ 6,388:
end /*#*/
say substr(_, 2) /*remove 1st leading blank in the line.*/
end /*r*/ /*stick a fork in it, we're all done. */</langsyntaxhighlight>
{{out|output|text=&nbsp; when using the default input:}}
<pre>
Line 5,844 ⟶ 6,433:
 
This version of the '''base''' function has some boilerplate for signed numbers and various error checking.
<langsyntaxhighlight lang="rexx">/*REXX program constructs/shows Floyd's triangle for any number of rows in any base ≤90.*/
parse arg N radx . /*obtain optional arguments from the CL*/
if N=='' | N=="," then N= 5 /*Not specified? Then use the default.*/
Line 5,893 ⟶ 6,482:
erd: call ser 'illegal "digit" in' x":" _
erm: call ser 'no argument specified.'
ser: say; say '***error***'; say arg(1); say; exit 13</langsyntaxhighlight>
{{out|output|text=&nbsp; when using the input of: &nbsp; <tt> 6 &nbsp; 2 </tt>}}
<pre>
Line 5,969 ⟶ 6,558:
 
=={{header|Ring}}==
<langsyntaxhighlight lang="ring">
rows = 10
n = 0
Line 5,980 ⟶ 6,569:
next
 
</syntaxhighlight>
</lang>
Output:
<pre>
Line 5,998 ⟶ 6,587:
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
=={{header|RPL}}==
HP-28 display has 4 lines only, so the task must be run on an HP-48 or greater to achieve n=5, with the advantage of benefitting from additional instructions: <code>INCR</code> increments a variable and returns its updated value and <code>FREEZE</code> acts as a <code>DO UNTIL KEY END</code> loop.
 
n=14 is out of reach for HP-48+, since only capable of displaying 22 characters per line.
{| class="wikitable"
! RPL code
! Comment
|-
|
0 → c
≪ CLLCD 1 5 '''FOR''' line
"" '''DO'''
'''IF''' c 9 < '''THEN''' " " + '''END'''
'c' INCR →STR + " " +
'''UNTIL''' line DUP 1 + * 2 / c == '''END'''
line DISP
'''NEXT''' 3 FREEZE
≫ ≫ ‘'''FLOYD'''’ STO
|
'''FLOYD''' ''( -- )''
initialize counter
clear screen, for line=1 to 5
initialize output string, loop
if counter<9 then add one space
increment counter and put it in string
until line*(line+1)/2 == counter
display string
freeze screen until key pressed
.
|}
====Output====
[https://aerobarfilms.files.wordpress.com/2023/04/hp-48-floyds-triangle-1-15.png Screenshot from HP-48 emulator]
 
=={{header|Ruby}}==
<langsyntaxhighlight lang="ruby">def floyd(rows)
max = (rows * (rows + 1)) / 2
widths = ((max - rows + 1)..max).map {|n| n.to_s.length + 1}
Line 6,010 ⟶ 6,633:
 
floyd(5)
floyd(14)</langsyntaxhighlight>
 
{{out}}
Line 6,036 ⟶ 6,659:
 
=={{header|Run BASIC}}==
<langsyntaxhighlight lang="runbasic">input "Number of rows: "; rows
dim colSize(rows)
for col=1 to rows
Line 6,049 ⟶ 6,672:
next
print
next</langsyntaxhighlight>
<pre>Number of rows: ?14
1
Line 6,067 ⟶ 6,690:
 
=={{header|Rust}}==
<langsyntaxhighlight lang="rust">fn main() {
floyds_triangle(5);
floyds_triangle(14);
Line 6,101 ⟶ 6,724:
}
 
</syntaxhighlight>
</lang>
 
=={{header|Scala}}==
<langsyntaxhighlight lang="scala">def floydstriangle( n:Int ) = {
val s = (1 to n)
val t = s map {i => (s.take(i-1).sum) + 1}
Line 6,123 ⟶ 6,746:
// Test
floydstriangle(5)
floydstriangle(14)</langsyntaxhighlight>
{{out}}
<pre>
Line 6,150 ⟶ 6,773:
 
=={{header|Seed7}}==
<langsyntaxhighlight lang="seed7">$ include "seed7_05.s7i";
 
const proc: writeFloyd (in integer: rows) is func
Line 6,176 ⟶ 6,799:
writeFloyd(5);
writeFloyd(14);
end func;</langsyntaxhighlight>
 
Output:
Line 6,200 ⟶ 6,823:
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
=={{header|SETL}}==
<syntaxhighlight lang="setl">program floyd_triangle;
floyd(5);
print;
floyd(14);
print;
 
proc floyd(rows);
maxno := rows * (rows+1) div 2;
n := 1;
loop for row in [1..rows] do
loop for col in [1..row] do
nprint(lpad(str n, 1 + #str (maxno - rows + col)));
n +:=1;
end loop;
print;
end loop;
end proc;
end program;
</syntaxhighlight>
{{out}}
<pre> 1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|Sidef}}==
<langsyntaxhighlight lang="ruby">func floyd(rows, n=1) {
var max = Math.range_sum(1, rows)
var widths = (max-rows .. max-1 -> map{.+n->to_s.len})
Line 6,211 ⟶ 6,876:
 
floyd(5) # or: floyd(5, 88)
floyd(14) # or: floyd(14, 900)</langsyntaxhighlight>
{{out}}
<pre>
Line 6,236 ⟶ 6,901:
 
=={{header|SPL}}==
<langsyntaxhighlight lang="spl">floyd(5)
floyd(14)
 
Line 6,250 ⟶ 6,915:
#.output(s)
<
.</langsyntaxhighlight>
{{out}}
<pre>
Line 6,275 ⟶ 6,940:
 
=={{header|Tcl}}==
<langsyntaxhighlight lang="tcl">proc floydTriangle n {
# Compute the column widths
for {set i [expr {$n*($n-1)/2+1}]} {$i <= $n*($n+1)/2} {incr i} {
Line 6,293 ⟶ 6,958:
floydTriangle 5
puts "Floyd 14:"
floydTriangle 14</langsyntaxhighlight>
{{out}}
<pre>
Line 6,321 ⟶ 6,986:
=={{header|TXR}}==
 
<langsyntaxhighlight lang="txrlisp">(defun flotri (n)
(let* ((last (trunc (* n (+ n 1)) 2))
(colw (mapcar [chain tostring length]
Line 6,339 ⟶ 7,004:
((num blah . etc) (usage "too many arguments"))
((num) (flotri (int-str num)))
(() (usage "need an argument")))</langsyntaxhighlight>
 
{{out}}
Line 6,372 ⟶ 7,037:
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</pre>
 
=={{header|Uiua}}==
Probably terrible and unidiomatic...
<syntaxhighlight lang="Uiua">
Floyd ← ⇌⍥(⊂⍚(+⇡∩(+1)⊃⧻(⊢⇌))⊢.):{[1]}-1
 
JoinUsing ← ↘1/◇⊂≡(□◇⊂)↯:⊙(⧻.)□
PadL ← ⊂/⊂↯:" "
Lengths ← ⍚∵◇∵(⧻°⋕)°□
 
PrintIt ← (
# Create table of [last row sizes] [this row sizes] [this row numbers]
⊢⊞⊂⊢⊢↙¯1.⍉[Lengths.]
 
≡(
# Calculate last row sizes - this row sizes and use to calculate paddings
⍉⊟⊃(-:↙:⊙(⧻.)∩°□°⊟↙2)(°⋕°□⊢↘2)
&pJoinUsing " " ≡(⍚PadL°⊟)
)
)
 
PrintIt Floyd 4
PrintIt Floyd 14
</syntaxhighlight>
{{out}}
<pre>
1
2 3
4 5 6
7 8 9 10
 
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105
</pre>
 
=={{header|VBA}}==
Solution in Microsoft Office Word. Based on VBScript
<langsyntaxhighlight VBlang="vb">Option Explicit
Dim o As String
Sub floyd(L As Integer)
Line 6,398 ⟶ 7,109:
.TypeText Text:=o
End With
End Sub</langsyntaxhighlight>
{{out}}
<syntaxhighlight lang="text">5 lines
1
2 3
Line 6,421 ⟶ 7,132:
67 68 69 70 71 72 73 74 75 76 77 78
79 80 81 82 83 84 85 86 87 88 89 90 91
92 93 94 95 96 97 98 99 100 101 102 103 104 105</langsyntaxhighlight>
 
=={{header|VBScript}}==
{{works with|Windows Script Host|*}}
<syntaxhighlight lang="vbscript">
<lang VBScript>
' Read the number of rows to use..
intRows = WScript.StdIn.ReadLine
Line 6,441 ⟶ 7,152:
WScript.StdOut.WriteLine ""
Next
</syntaxhighlight>
</lang>
 
=={{header|Visual Basic .NET}}==
{{trans|C#}}
<langsyntaxhighlight lang="vbnet">Imports System.Text
 
Module Module1
Line 6,484 ⟶ 7,195:
End Sub
 
End Module</langsyntaxhighlight>
{{out}}
<pre> 1
Line 6,510 ⟶ 7,221:
=={{header|Wren}}==
{{libheader|Wren-fmt}}
<langsyntaxhighlight ecmascriptlang="wren">import "./fmt" for Fmt
 
var floyd = Fn.new { |n|
Line 6,526 ⟶ 7,237:
floyd.call(5)
System.print("\nFloyd(14):")
floyd.call(14)</langsyntaxhighlight>
 
{{out}}
Line 6,554 ⟶ 7,265:
 
=={{header|XPL0}}==
<langsyntaxhighlight XPL0lang="xpl0">include c:\cxpl\codes; \include 'code' declarations
 
func IntLen(N); \Return number of digits in a positive integer
Line 6,577 ⟶ 7,288:
[Floyd(5);
Floyd(14);
]</langsyntaxhighlight>
 
Output:
Line 6,604 ⟶ 7,315:
=={{header|zkl}}==
Format last line and then fit each line to that format (which is wider than terminal width before formating breaks down (at 10 digit numbers)):
<langsyntaxhighlight lang="zkl">fcn lcNum(row){(row*(row+1)/2+1)} // lazy caterer's sequence
fcn floydsTriangle(rows){
fmt:=[lcNum(rows-1)..lcNum(rows)-1].pump(String,fcn(n){
Line 6,614 ⟶ 7,325:
}
floydsTriangle(5); println();
floydsTriangle(14);</langsyntaxhighlight>
{{out}}
<pre>
Line 6,640 ⟶ 7,351:
 
=={{header|ZX Spectrum Basic}}==
<langsyntaxhighlight lang="zxbasic">10 LET n=10: LET j=1: LET col=1
20 FOR r=1 TO n
30 FOR j=j TO j+r-1
Line 6,648 ⟶ 7,359:
70 PRINT
80 LET col=1
90 NEXT r</langsyntaxhighlight>
2,122

edits