Here is my complete code example of how to find the GCD of two numbers in Java. This Java program usesEuclid's methodto find the GCD of two numbers. They must be an integer, so make sure you check the numbers entered by the user like floating-point numbers are not allowed. Similarly,...
NumberIsTooLargeException,MathArithmeticException{CombinatoricsUtils.checkBinomial(n,k);if((n==k)||(k==0)){return1;}if((k==1)||(k==n-1)){returnn;}// Use symmetry for large kif(k>n/2){returnbinomialCoefficient(n,n-k);}// We use the formula// (n choose k) = n!