Programming Examples

Java program to reverse the array


Write a java program which accept a array from user and revere the array and print it.

import java.util.*;
class ReverseArray { 
    
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the size of Array : ");
        int size=sc.nextInt();
        int arr[]=new int[size];
        System.out.println("Enter "+size+" Elements for Array :");
        for(int i=0;i<size;i++)
        {
            arr[i]=sc.nextInt();
        }       
        System.out.println("Original array: ");
        for(int i=0;i<size;i++)
        {
            System.out.print(arr[i]+"  ");
        }
        int a,b;
        for(a=0,b=size-1;a<b;a++,b--)
        {
            int temp = arr[a];
            arr[a] = arr[b];
            arr[b] = temp;    
        }
        
        
        System.out.println("\nReversed array: ");
        for(int i=0;i<size;i++)
        {
            System.out.print(arr[i]+"  ");
        }
    }
}
Output

Enter the size of Array : 

10

Enter 10 Elements for Array :

2

3

4

5

6

7

8

9

10

1

Original array: 

2  3  4  5  6  7  8  9  10  1  

Reversed array: 

1  10  9  8  7  6  5  4  3  2  

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