Evaluate binomial coefficients: Difference between revisions
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(→{{header|Perl 6}}: alternate form proposal) |
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This particular piece of code implements the factorial function as a custom operator, which allows you to use it as you would in mathematical equations. The multi keyword on line 1 is to allow operator overloading. |
This particular piece of code implements the factorial function as a custom operator, which allows you to use it as you would in mathematical equations. The multi keyword on line 1 is to allow operator overloading. |
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An alternative is to store the results in a lazy list constant: |
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<lang Perl6>constant BINOMIAL := gather for 0 .. * -> $n { |
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take [ map { ([*] $n - $^k + 1 .. $n) / [*] 1 .. $k }, ^$n ] |
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} |
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say BINOMIAL[5][3];</lang> |
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=={{header|PL/I}}== |
=={{header|PL/I}}== |
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