Problem Solving
A collection of algorithm challenges and coding tests I’ve solved, reflecting my approach to logic, efficiency, and problem-solving as a software engineer.

LeetCode

Easy Medium Hard

Codeforces & BOJ

Codeforces Round Codeforces 1000–1400 BOJ

Samsung Coding Test

Advanced (Type A)
Book: Algorithm Problem Solving Strategy (Jongman) Fail Note
Professional (Type B)
Basic Data Structure USACO Silver