Group Reversal on Jeanphilo Bloghttps://shio-chan-dev.github.io/jeanblog/tags/group-reversal/Recent content in Group Reversal on Jeanphilo BlogHugo -- 0.159.2en-usTue, 10 Feb 2026 10:25:53 +0800Hot100: Reverse Nodes in k-Group Group-Wise In-Place ACERS Guidehttps://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/25-reverse-nodes-in-k-group/Tue, 10 Feb 2026 10:25:53 +0800https://shio-chan-dev.github.io/jeanblog/alg/leetcode/hot100/25-reverse-nodes-in-k-group/Reverse a linked list in groups of k nodes in-place, leaving the last group unchanged if its size is smaller than k. This guide presents a dummy-node + kth-scan + in-place reversal template in O(n) time and O(1) extra space.