https://shio-chan-dev.github.io/jeanblog/tags/leetcode-98/Recent content in LeetCode 98 on Jeanphilo BlogHugo -- 0.161.1en-usSun, 19 Apr 2026 15:13:19 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/binary-tree/98-validate-binary-search-tree/Sun, 19 Apr 2026 15:13:19 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/binary-tree/98-validate-binary-search-tree/A practical guide to LeetCode 98 covering ancestor range constraints, why parent-only checks fail, and two stable solutions: recursive bounds and inorder validation.