Dingcodingco's lectures are the best. I really feel like I can pass if I just study like this.

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With step-by-step explanations that even beginners can easily understand, the once-vague coding tests will become clear. Learn only what you need and apply it to real-world practice right away!

dingcodingco

The secret to passing 38 companies, essential algorithms for the 2026 coding test

코딩테스트대비

입문

초급

중급이상

파이썬

Python

Coding Test

Algorithm

자료구조

data-structure

Pre-course Algorithm Test

[Week 1] Time Complexity & Space Complexity

[Week 2] Arrays and Linked Lists, Binary Search, and Recursion

[Week 3] Sorting, Stacks and Queues, Hash

[Week 4] Trees and Heaps, BFS and DFS, and DP

[Week 5] Crushing actual past exam questions from Kakao, Samsung, and LINE