https://shio-chan-dev.github.io/jeanblog/tags/hash-table/Recent content in Hash Table on Jeanphilo BlogHugo -- 0.159.2en-usWed, 11 Feb 2026 07:59:32 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/linked-list/138-copy-list-with-random-pointer/Wed, 11 Feb 2026 07:59:32 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/linked-list/138-copy-list-with-random-pointer/The core of copying a random-pointer list is mapping original node identity to copied node identity, then rebuilding next/random pointers. This article uses the ACERS structure to cover intuition, engineering analogies, pitfalls, and runnable multi-language implementations.https://shio-chan-dev.github.io/jeanblog/alg/leetcode/1512-number-of-good-pairs/Tue, 30 Dec 2025 11:40:00 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/1512-number-of-good-pairs/Solve Good Pairs with one-pass hash counting, plus engineering scenarios, complexity, and multi-language solutions.