Union-Find on Jeanphilo Bloghttps://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/union-find/Recent content in Union-Find on Jeanphilo BlogHugo -- 0.163.3en-usThu, 02 Jul 2026 00:00:00 +0800LeetCode 200: Number of Islands With Union-Findhttps://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/union-find/200-number-of-islands/Thu, 02 Jul 2026 00:00:00 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/union-find/200-number-of-islands/Solve LeetCode 200 Number of Islands in Python by deriving land-only count, 2D-to-1D ids, Union-Find merges, and exactly when count decreases.Union-Find Template: Derive find / union / counthttps://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/union-find/union-find-template/Tue, 30 Jun 2026 00:00:00 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/union-find/union-find-template/Derive the Python Union-Find template from a small set-merging task: parent, find, union, count, connected, and path compression.