V.2 Find Binomial Coefficient using Factorial Function Java Programming Code

Find Binomial Coefficient using Factorial Function Java Programming Code

public class BinCoeff {

    public static int factorial(int n) {

        int f = 1;

        for (int i = 1; i <= n; i++) {

            f = f * i;

        }

        return f; // factorial of n.

    }

    public static int BinCoeff(int n, int r) {

        int fact_n = factorial(n);

        int fact_r = factorial(r);

        int fact_nmr = factorial(n - r);

        int BinCoeff = fact_n / (fact_r * fact_nmr);

        return BinCoeff;

    }

    public static void main(String[] args) {

        System.out.println(BinCoeff(5, 2));

    }

}

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