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Task/Evaluate-binomial-coefficients/Ring/evaluate-binomial-coefficients.ring

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+numer = 0
+binomial(5,3)
+see "(5,3) binomial = " + numer + nl
+
+func binomial n, k
+     if k > n return nil ok
+     if k > n/2 k = n - k ok
+     numer = 1
+     for i = 1 to k
+         numer = numer * ( n - i + 1 ) / i
+     next
+     return numer