Question

Write a java program that has a method called sameArrayBackwards. The method takes an array of integers, and checks if the numbers in the array are the same going forward as going backwards and will return a boolean (true or false) depending on the result. You can assume that there is at least one element in the array.

Method Header:

public static boolean sameArrayBackwards (int [] arr)

You will test your method in the main method of your program by using a Scanner that will read:

• An int (n) representing the length of an array which you will use to create a new integer array
• Then, you will read in n integers and save these in the array.

Then call the method sameArrayBackwards and pass the array you created. Print the result that is returned by your method.

Details

Input

A positive integer (n) followed by a list of n integers.
Sample Input: 9 10 11 12 45 21 45 12 11 10

Output

A boolean value
Sample Output: true

Answer 1

import java.util.Scanner;

public class SameArrayBackwards {

    public static boolean sameArrayBackwards(int[] arr) {
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] != arr[arr.length - i - 1]) {
                return false;
            }
        }
        return true;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int[] arr = new int[in.nextInt()];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = in.nextInt();
        }
        System.out.println(sameArrayBackwards(arr));
        in.close();
    }
}