Combinations and permutations: Difference between revisions
Content deleted Content added
→{{header|Perl 6}}: rephrasing + not using the Gamma name |
m →{{header|Ruby}}: prevent (2..1) is not a valid range error. |
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def combination(k) |
def combination(k) |
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self.permutation(k) / ( |
self.permutation(k) / (1 .. k).inject(1, :*) |
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end |
end |
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