Skip to content
Related Articles

Related Articles

Improve Article

Java Program for GCD of more than two (or array) numbers

  • Last Updated : 04 Dec, 2018

The GCD of three or more numbers equals the product of the prime factors common to all the numbers, but it can also be calculated by repeatedly taking the GCDs of pairs of numbers.

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.  To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

In case you wish to attend live classes with experts, please refer DSA Live Classes for Working Professionals and Competitive Programming Live for Students.

gcd(a, b, c) = gcd(a, gcd(b, c)) 
             = gcd(gcd(a, b), c) 
             = gcd(gcd(a, c), b)

// Java program to find GCD of two or
// more numbers
public class GCD {
    // Function to return gcd of a and b
    static int gcd(int a, int b)
        if (a == 0)
            return b;
        return gcd(b % a, a);
    // Function to find gcd of array of
    // numbers
    static int findGCD(int arr[], int n)
        int result = arr[0];
        for (int i = 1; i < n; i++)
            result = gcd(arr[i], result);
        return result;
    public static void main(String[] args)
        int arr[] = { 2, 4, 6, 8, 16 };
        int n = arr.length;
        System.out.println(findGCD(arr, n));
// This code is contributed by Saket Kumar

Please refer complete article on GCD of more than two (or array) numbers for more details!

My Personal Notes arrow_drop_up
Recommended Articles
Page :