TwoSum.java

package com.sarvesh.javabasics;

import java.util.Scanner;

public class TwoSum {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter number of elements: ");
        int n = sc.nextInt();

        int[] arr = new int[n];
        System.out.println("Enter elements:");
        for (int i=0;i<n;i++) {
            arr[i] = sc.nextInt();
        }
        System.out.print("Enter target: ");
        int target = sc.nextInt();

        for (int i=0;i<n;i++) {
            for (int j=i+1;j<n;j++) {
                if (arr[i] + arr[j] == target) {
                    System.out.println("Index: [" + i + ", " + j +"]");                
                }
            }
        }
        sc.close();
    }
}