Question

Write a program whose input is two integers and whose output is the two integers swapped. Place the values in an array, where x is position 0 and y is position 1. Ex: If the input is: 3 8 then the output is: 8 3 Your program must define and call a method: public static void swapValues(int[] values)

Answer 1

Answer:

import java.util.Arrays;

public class swap{

   public static void main(String []args){

       int [] arr = {2,4};

       swapValues(arr);

   }

   public static void swapValues(int[] values){

       int temp;

       System.out.println(Arrays.toString(values));

       temp=values[0];

       values[0]=values[1];

       values[1] =temp;

       System.out.println(Arrays.toString(values));

   }

}

Explanation:

In the program above, we created the method swapValues that receives an array of integers as parameters. in the method definition, we created a temp variable that is used to swapp the element at index 0 and index 1. Java's Arrays.to string method is used to print the array before and after the swap.