May 18, 2017

Srikaanth Kumar

How to Swap Two Numbers Without Using Temporary Variable Java Program


Program:

How to swap two numbers without using temporary variable?

Description:

Write a program to swap or exchange two numbers. You should
not use any temporary or third variable to swap.

Code:

package com.java2novice.algos;

public class MySwapingTwoNumbers {

    public static void main(String a[]){
        int x = 10;
        int y = 20;
        System.out.println("Before swap:");
        System.out.println("x value: "+x);
        System.out.println("y value: "+y);
        x = x+y;
        y=x-y;
        x=x-y;
        System.out.println("After swap:");
        System.out.println("x value: "+x);
        System.out.println("y value: "+y);
    }
}

Output:

Before swap:
x value: 10
y value: 20
After swap:
x value: 20
y value: 10



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