https://shio-chan-dev.github.io/jeanblog/tags/leetcode-200/Recent content in LeetCode 200 on Jeanphilo BlogHugo -- 0.163.3en-usThu, 02 Jul 2026 00:00:00 +0800https://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.