Question

java

•Write a method product(int x, int y) which returns the product of multiplying x * y but doing it recursively. Recall that multiplication can be implemented as repeated addition. For example, 4 * 7 is the same as adding 7, 4 times: 7 + 7 + 7 + 7. •Write a main method that asks for two numbers, and returns their product by calling the product method.

Compile and test your code in NetBeans and then on Hackerrank

Answer 1

//MultiplyRec.java
import java.util.Scanner;
public class MultiplyRec {
    public static int multiply(int x, int y){
        if(x == 0){
            return 0;
        }
        else{
            return y + multiply(x-1,y);
        }
    }

    public static void main(String args[]) {
        Scanner scan = new Scanner(System.in);
        System.out.print("Enter number: ");
        int n = scan.nextInt();

        System.out.print("Enter number: ");
        int m = scan.nextInt();

        System.out.println("RESULT: "+multiply(n,m));
    }
}