Target sum pair - what is the error?

#1

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner scn = new Scanner(System.in);
int n = scn.nextInt();
int[] arr = new int[n];
for(int i = 0 ; i< n ; i++){
arr[i] = scn.nextInt();

	}
	int target = scn.nextInt();

	int left = 0;
	int right = arr.length - 1;

	while (left < right) {

		int sum = arr[left] + arr[right];

		if (sum > target) {
			right--;
		} else if (sum < target) {
			left++;
		} else {
			System.out.println(arr[left] + " and " + arr[right]);
			left++;
			right--;
		}

	}
	

}

}

#2

@asthaaggarwal2
you need to sort the array first.
using Arrays.sort();

#3

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