Leetcode

1. Famous problems and solutions

1. Pham Lam

1. Competitive programming books

https://projecteuler.net/archives

1. Archived Problems - Project Euler
2. Consider Yourself a Developer? You Should Solve the Project Euler Problems

1. TimeComplexity - Python Wiki

1. Algorithms
2. Programming

1. Follow these steps to solve any Dynamic Programming interview problem
2. DP design pattern
3. Dynamic Programming-The General Method

1. Code Golf
2. ProgramCreek.com
3. CS 97SI: Introduction to Programming Contests
4. Yu's Coding Garden
5. Cmp Sc 5130 -- Advanced Data Structures and Algorithms
6. Techie Delight
7. 1 more

1. Brilliant
2. backtracking
3. Backtracking
4. Backtracking – Algorithms and Leetcode – Medium
5. 全面解析回溯法：算法框架与问题求解
6. leetcode.com
7. 2 more