Method gcd

Lecture 31 - Recursion PS4 GCD/src/GCD.java:4–7

(int x, int y)

public class GCD {
    static int gcd(int x, int y){
        if(y == 0) return x;
        return gcd(y, x % y);
    }

    static int iGCD(int x, int y){
        while (x % y != 0){