Question

How to swap two numbers with function in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {

    public static void main(String[] args) {

        int[] arr = new int[]{0, 0};
        int n1 = 50;
        int n2 = 35;
        
        arr[0] = n1;
        arr[1] = n2;
        
        swap(arr);
       
        n1 = arr[0];
        n2 = arr[1];
        
        System.out.println("n1 = " + n1);
        System.out.println("n2 = " + n2);
    }
    private static void swap(int[] arr) 
    {
        int tmp = arr[0];
        arr[0] = arr[1];
        arr[1] = tmp;
   }
}
  
/*
run:
 
n1 = 35
n2 = 50
  
*/

 

70+ SQL courses for beginners and professionals