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Rotate List (M) 题目 Given a linked list, rotate the list to the right by k places, where k is non-negative. Example 1: Input: 1->2->3->4->5->NULL, k = 阅读全文
摘要：
Flatten a Multilevel Doubly Linked List (M) 题目 You are given a doubly linked list which in addition to the next and previous pointers, it could have a 阅读全文