Prefix Max on Jeanphilo Bloghttps://shio-chan-dev.github.io/jeanblog/tags/prefix-max/Recent content in Prefix Max on Jeanphilo BlogHugo -- 0.159.2en-usSat, 24 Jan 2026 10:40:53 +0800Hot100: Trapping Rain Water (Two Pointers O(n) ACERS Guide)https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/42-trapping-rain-water/Sat, 24 Jan 2026 10:40:53 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/42-trapping-rain-water/Compute trapped rain water in O(n) using two pointers and left/right maxima. Includes engineering scenarios, pitfalls, and multi-language implementations.