17 lines
367 B
Text
17 lines
367 B
Text
function choose($n,$k) {
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if($k -le $n -and 0 -le $k) {
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$numerator = $denominator = 1
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0..($k-1) | foreach{
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$numerator *= ($n-$_)
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$denominator *= ($_ + 1)
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}
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$numerator/$denominator
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} else {
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"$k is greater than $n or lower than 0"
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}
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}
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choose 5 3
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choose 2 1
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choose 10 10
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choose 10 2
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choose 10 8
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