YoungForest's blog

LeetCode weekly contest 258

Posted on 2021-09-15 Edited on 2024-01-17 In LeetCode Disqus:

RankNameScoreFinish TimeQ1 (3)Q2 (4)Q3 (5)Q4 (6)540 / 12179YoungForest120:19:130:02:460:12:180:19:13nullFrom this week, I will write my summary posts for the LeetCode weekly and biweekly contests in English. Before this, I have written more than 100 LeetCode contests summary posts in Chinese. For fu

Best implement to use pair as key to std::unordered_map in C++

Posted on 2020-05-27 Edited on 2024-01-17 In Programming Disqus:

Reference: C++ Standard Library: A tutorial and reference, Second version Chapter 7.9.2: Creating and Controlling unordered Container All solutions I found in Google use XOR to generate hashcode of pair, which is totally bad. see why-is-xor-the-default-way-to-combine-hashes. However, the book has g