Sentinel on Jeanphilo Bloghttps://shio-chan-dev.github.io/jeanblog/tags/sentinel/Recent content in Sentinel on Jeanphilo BlogHugo -- 0.159.2en-usTue, 10 Feb 2026 10:47:02 +0800Hot100: Merge Two Sorted Lists Sentinel Two-Pointer Merge ACERS Guidehttps://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/21-merge-two-sorted-lists/Tue, 10 Feb 2026 10:47:02 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/21-merge-two-sorted-lists/Merge two sorted linked lists in O(m+n) with sentinel node and two pointers, with iterative and recursive comparison, engineering mapping, and runnable multi-language implementations.