Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, …

Jul 26, 2025 · Hashing provides a more efficient solution to the 2-Sum problem. Rather than checking every possible pair, we store each number in an unordered set during iterating over the array's …

Your task is to find two numbers in the array that add up to the target value and return their indices. The problem guarantees that there will be exactly one valid solution - meaning there's exactly one pair of …

Mar 21, 2025 · In this post, we will dive into the Two-Sum problem, a widely known algorithmic challenge often featured in coding interviews. The problem has two main variants, each presenting a unique …

Two Sum is one of the most well-known problems on LeetCode. It was the first one I ever solved, and it comes up often in interviews too. The two solutions below are written in Java and can be copied …

Apr 28, 2025 · In this post, I’ll share three approaches to solve the classic Two Sum problem efficiently with proper Time Complexity, Space Complexity, and explanations. 🚀

Learn the Two Sum Problem in DSA using a simple Array and HashMap approach. This beginner-friendly article explains the logic step by step with examples and clean code.

Mar 26, 2025 · The two-sum problem is a popular technical interview question that involves finding two indices in an array that add up to a target value. Here’s how to solve the two-sum problem using two …

Jul 23, 2025 · The 2-Sum problem is a popular algorithmic challenge where the goal is to identify two distinct elements in an array whose sum equals a specific target. The problem emphasizes …

That’s the core of LeetCode 1: Two Sum, an easy-level problem where you find two numbers in an array that sum to a given target and return their indices. In this guide, we’ll use Python to dive deep into …