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List comprehensions: Difference between revisions
m
→{{header|REXX}}: changed comments and whitespace, optimized the inner DO loop.
m (→{{header|REXX}}: changed comments and whitespace, optimized the inner DO loop.) |
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Line 1,932:
<lang rexx>/*REXX program displays a vertical list of Pythagorean triples up to a specified number.*/
parse arg n . /*obtain optional argument from the CL.*/
if n=='' | n=="," then n=
say 'Pythagorean triples (a² + b² = c², c ≤' n"):" /*display the list's title. */
$= /*assign a null to the triples list. */
do a=1 for n-2; aa=a*a
do b=a+1 to n-1;
do c=b+1 to n ; cc= c*c
if
if ab==cc then do; $=$ '{'a"," || b','c"}"; leave; end
end /*c*/
end /*b*/
end /*a*/
#= words($)
do j=1 for #
say left('', 20) word($, j) /*display a member of the list, */
end /*j*/ /* [↑] list the members vertically. */
say
say # 'members listed.' /*stick a fork in it, we're all done. */</lang>
{{out|output|text= when using the default input:}}
Line 2,008 ⟶ 2,010:
<lang rexx>/*REXX program displays a vertical list of Pythagorean triples up to a specified number.*/
parse arg n . /*get the optional argument from the CL*/
if n=='' | n=="," then n=
say 'Pythagorean triples (a² + b² = c², c ≤' n"):" /*display the list's title. */
$= /*assign a null to the triples list. */
do a=1 for n-2; aa= a*a
do b=a+1 to n-1;
do c=b+1 to n ; cc= c*c
if
if ab==cc then do; $=$ '{'a"," || b','c"}"; leave; end
end /*c*/
end /*b*/
end /*a*/ /*stick a fork in it, we're all done. */
#= words($)
say; say strip($) /*show the Pythagorean triples to term.*/
say; say # 'members listed.' /*triples are listed in order of 1st #.*/</lang>
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