vikram-2101/Hacktoberfest2025-Data-Structure-and-Algorithm

Add Two Sum Problem Solution

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#16 opened on Oct 7, 2025

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good first issuehacktoberfest

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Description

Description: Implement the classic Two Sum problem where you find two numbers that add up to a target. Add implementations in multiple languages.

Tasks:

Implement in JavaScript

Add explanation and time complexity

Contributor guide

Research direction
Study the Two Sum problem, understand the hash map approach, implement in JavaScript with O(n) time complexity, and document time and space complexity.
Tech stack
javascript
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScriptBasic programming concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85