用Java语言写一个getGCD函数

public class GCD { public static int getGCD(int a, int b) { if (b == 0) { return a; } else { return getGCD(b, a % b); } }

public static void main(String[] args) {
    int a = 15;
    int b = 25;
    System.out.printf("The GCD of %d and %d is %d\n", a, b, getGCD(a, b));
}

}