ARRAYS · TWO POINTERS · SLIDING WINDOW · STACK · BINARY SEARCH · LINKED LIST · TREES · HEAP · BACKTRACKING · TRIES · GRAPHS · DYNAMIC PROGRAMMING · BIT MANIPULATION · MATH & GEOMETRY · INTERVALS · GREEDY · ARRAYS · TWO POINTERS · SLIDING WINDOW · STACK · BINARY SEARCH · LINKED LIST · TREES · HEAP · BACKTRACKING · TRIES · GRAPHS · DYNAMIC PROGRAMMING · BIT MANIPULATION · MATH & GEOMETRY · INTERVALS · GREEDY ·

Personal solutions archive

ALGO
VAULT

150 Problems

18 Topics

8 Languages

Learning Roadmap

150 curated LeetCode problems spanning every pattern and data structure that appears in top-tier technical interviews — documented with full descriptions, examples, and solutions across multiple languages.

Difficulty breakdown

Easy 45

Medium 96

Hard 31

Supported Languages

Python

JavaScript

Java

C++

Rust

TypeScript

Other

Made by

Kyle Dang

ARRAYS & HASHING · TWO POINTERS · SLIDING WINDOW · STACK · BINARY SEARCH · LINKED LIST · TREES · HEAP / PRIORITY QUEUE · BACKTRACKING · TRIES · GRAPHS · ADVANCED GRAPHS · 1D DP · 2D DP · BIT MANIPULATION · MATH & GEOMETRY · INTERVALS · GREEDY · ARRAYS & HASHING · TWO POINTERS · SLIDING WINDOW · STACK · BINARY SEARCH · LINKED LIST · TREES · HEAP / PRIORITY QUEUE · BACKTRACKING · TRIES · GRAPHS · ADVANCED GRAPHS · 1D DP · 2D DP · BIT MANIPULATION · MATH & GEOMETRY · INTERVALS · GREEDY ·

Browse by Topic

All 150 problems organized into 18 categories — from fundamental arrays and hashing through to advanced graph algorithms and 2D dynamic programming.

Read the Problem

Every problem has a full description, worked examples with inputs and outputs, and constraint notes — no tab-switching needed.

Study the Solution

Solutions in Python, JavaScript, Java, C++, Go, Rust, TypeScript and more. Tab between languages to compare implementations side-by-side.

ALGOVAULT

All Topics

ALGO VAULT

ALGO
VAULT