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LLDCoding - Master LLD and Concurrency

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Design (LLD) Tic Tac Toe - C++

Subhahu JainSubhahu Jain
Mar 14, 20268 min read

📌 1. Problem Statement Design a Tic Tac Toe game that: Supports configurable board size (N × N) Supports 2 players Validates moves Detects win...

Design (LLD) Tic Tac Toe - C++

Design (LLD) Vending Machine - C++

Subhahu JainSubhahu Jain
Feb 28, 20267 min read

LLD and Concurrency Design for vending machine · 1️⃣ Functional Requirements A vending machine should support: Add products Add inventory...

Design (LLD) Vending Machine - C++

Design (LLD) Internet Download Manager like IDM - Machine Coding Interview

Subhahu JainSubhahu Jain
Jan 14, 20251 min read

Feature Requirements Download File: The system should support downloading a file from a given URL using HTTP/HTTPS protocols. Segmented Downloading:...

Design (LLD) Internet Download Manager like IDM - Machine Coding Interview

Design (LLD) Online Book Management System - Machine Coding Interview

Subhahu JainSubhahu Jain
Dec 16, 20245 min read

Asked in LLD Interview Functional Requirements: Search for a Book: Users should be able to search for books in the system based on various criteria,...

Design (LLD) Online Book Management System - Machine Coding Interview

Design (LLD) Leetcode Code Runner Service - Machine Coding Interview

Subhahu JainSubhahu Jain
Nov 30, 20241 min read

Features Required 1. User Submission Handling Accepts user code in multiple languages (Java, Python, C++, etc.). Handles syntax validation before...

Design (LLD) Leetcode Code Runner Service - Machine Coding Interview

Design (LLD) Android Unlock Pattern - Machine Coding Interview

Subhahu JainSubhahu Jain
Oct 20, 20243 min read

Features Required Pattern Input Handling Support for users to input unlock patterns on a 3x3 grid. Visual feedback for touch events, including...

Design (LLD) Android Unlock Pattern - Machine Coding Interview