/**
* Program for swapping two numbers without using temporary variable
* @author Technical Explorer
*/
package com.technicalexplorer;
import java.util.Scanner;
public class SwapNumbers {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int first, second;
System.out.print("Enter first number: ");
first = scanner.nextInt();
System.out.print("Enter second number: ");
second = scanner.nextInt();
//Away close scanner object after use in order to avoid resource leak.
scanner.close();
System.out.println("Before Swap - first: " + first + ", second: " + second);
first = first + second;
//first value assigned to second
second = first - second;
//second value assigned to first
first = first - second;
System.out.println("After Swap - first: " + first + ", second: " + second);
}
}
* Program for swapping two numbers without using temporary variable
* @author Technical Explorer
*/
package com.technicalexplorer;
import java.util.Scanner;
public class SwapNumbers {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int first, second;
System.out.print("Enter first number: ");
first = scanner.nextInt();
System.out.print("Enter second number: ");
second = scanner.nextInt();
//Away close scanner object after use in order to avoid resource leak.
scanner.close();
System.out.println("Before Swap - first: " + first + ", second: " + second);
first = first + second;
//first value assigned to second
second = first - second;
//second value assigned to first
first = first - second;
System.out.println("After Swap - first: " + first + ", second: " + second);
}
}
Sample Input and Output:
Input:
Enter first number: 121
Enter second number: 15
Output:
Before Swap - first: 121, second: 15
After Swap - first: 15, second: 121
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| Swap two numbers without temporary variable |
