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题目: Reverse a linked list from position m to n. Do it in-place and in one-pass. For example:Given 1->2->3->4->5->NULL, m = 2 and n = 4, return 1->4->3 阅读全文
posted @ 2016-02-27 23:08
wxquare
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题目: Reverse a singly linked list. cpp: class Solution { public: ListNode* reverseList(ListNode* head) { if(!head || !head->next) return head; ListNode 阅读全文
posted @ 2016-02-27 23:02
wxquare
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题目: Given a positive integer, return its corresponding column title as appear in an Excel sheet. For example: 1 -> A 2 -> B 3 -> C ... 26 -> Z 27 -> A 阅读全文
posted @ 2016-02-27 11:15
wxquare
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