标题:Linked List Cycle通过率:36%难度中等Given a linked list, determine if it has a cycle in it.Follow up: Can you solve it without using extra space?拿到题后我以为很简单...
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其他好文 时间:
2014-12-11 17:09:01
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167
实现单链表排序 时间复杂度要求为 nlogn
由于是单链表,用快速排序无法往前面遍历(双向链表可以考虑),这里我们用到归并排序
代码如下:
/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(in...
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其他好文 时间:
2014-12-10 22:52:35
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258
题目
Given a linked list, swap every two adjacent nodes and return its head.
For example,
Given 1->2->3->4, you should return the list as 2->1->4->3.
Your algorithm should use only constant ...
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其他好文 时间:
2014-12-10 16:26:18
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123
题目
Given a linked list, return the node where the cycle begins. If there is no cycle, return null.
Follow up:
Can you solve it without using extra space?
解答
利用快慢指针使用Linked List Cycle I的办法,判...
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其他好文 时间:
2014-12-10 16:19:41
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187
Given a constant K and a singly linked list L, you are supposed to reverse the links of every K elements on L. For example, given L being 1→2→3→4→5→6,...
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其他好文 时间:
2014-12-09 21:19:43
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309
1.问题描述 Sort a linked list in O(n log n) time using constant space complexity.2.翻译 在固定的空间复杂度中使用O(nlog n)的时间复杂度进行链表的排序。 3.思路分析 提起排序,我们脑海中会迅速出现各种排序算法...
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其他好文 时间:
2014-12-09 21:06:36
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181
题目
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.
For example,
Given 1->2->3->3->4->4->5, return 1->2->5.
Giv...
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其他好文 时间:
2014-12-09 17:50:05
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142
今日leetcode链表题全制霸原题地址:https://oj.leetcode.com/problems/sort-list/题目内容:Sort ListSort a linked list inO(nlogn) time using constant space complexity.方法:题目...
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其他好文 时间:
2014-12-09 17:19:38
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162
题目
Given a singly linked list L: L0→L1→…→Ln-1→Ln,
reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→…
You must do this in-place without altering the nodes' values.
For example,
Given {1,2,3,4}, reorde...
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其他好文 时间:
2014-12-09 15:41:35
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150
Given a sorted linked list, delete all duplicates such that each element appear only once....
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其他好文 时间:
2014-12-09 00:36:43
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202