💡 Finding Two Numbers that Add Up to a Target in an Array: A Simple Guide for JavaScript Developers

🎯 Problem Statement

In this blog, we’re going to solve a classic problem that appears frequently in coding interviews: Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to the target.

The conditions are:

• Each input has exactly one solution.
• You can’t use the same element twice.
• You can return the answer in any order.

This problem is widely known as the “Two Sum Problem” and is often used to assess a developer’s problem-solving skills in coding interviews.

📚 Approach to Solve the Problem

We’ll explore three different ways to solve this problem, starting with the most straightforward solution and progressing to the most efficient one. By the end of this article, you’ll be able to solve this problem efficiently using JavaScript.

Method 1: Brute Force Approach 🚶‍♂️

In this approach, we simply check every pair of numbers to see if they add up to the target. This is the simplest way to solve the problem but not the most efficient.