Evaluate binomial coefficients: Difference between revisions
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Output: |
Output: |
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<lang>The Binomial Coefficient of 5 and 3 equals 10.</lang> |
<lang>The Binomial Coefficient of 5 and 3 equals 10.</lang> |
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Another (more flexible and efficient) implementation. n and k are taken from command line. The use of BigInts allows to compute coefficients of arbitrary size: |
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<lang scala>object Binomial extends App { |
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def binomialCoefficient(n: Int, k: Int) = |
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(BigInt(n - k + 1) to BigInt(n)).product / |
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(BigInt(1) to BigInt(k)).product |
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val Array(n, k) = args.map(_.toInt) |
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println("The Binomial Coefficient of %d and %d equals %s.".format(n, k, binomialCoefficient(n, k))) |
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}</lang> |
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=={{header|Scheme}}== |
=={{header|Scheme}}== |
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