【题目】
Given a linked list, remove the nth node from the end of list and return its head.
For example,
Given linked list: 1->2->3->4->5, and n = 2.
After removing the second node from the end, the linked list becomes 1->2->3->5.
Note:
Given n will ...
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其他好文 时间:
2014-05-18 18:48:03
阅读次数:
269
【题目】
Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly one solution.
For example, given array S = {...
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其他好文 时间:
2014-05-18 10:37:57
阅读次数:
269
Binary Tree Level Order Traversal
Total Accepted: 12441 Total
Submissions: 40879My Submissions
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left t...
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其他好文 时间:
2014-05-18 10:11:13
阅读次数:
337
【题目】
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not.
【题意】
判断给定的字符串是否是合法的...
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其他好文 时间:
2014-05-18 10:08:11
阅读次数:
327
【题目】
Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target.
Note:
Elements in a quadruplet (a,b,c,d) must be in non-descending ord...
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其他好文 时间:
2014-05-18 08:46:04
阅读次数:
227
题目:给定一个数组,以及一个 target 值,target 表示目标和,要求在数组中找到两个数,xi,xj,使得 xi + xj = target。返回值是找到的两个数的下标索引,升序排序。假定至少存在一对解。
分析:对于要处理数组的问题,我们的理想状态都是给定的数组是有序的就好了,在有序后,我们就可以首位各放一个标记。类似于二分查找。
vector twoSum(vector &n...
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其他好文 时间:
2014-05-18 08:04:03
阅读次数:
234
【题目】
Given a digit string, return all possible letter combinations that the number could represent.
A mapping of digit to letters (just like on the telephone buttons) is given below.
Input:Digit string "23"
Output: ["ad", "ae", "af", "bd", "be", "bf",...
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其他好文 时间:
2014-05-18 07:30:12
阅读次数:
340
公司的apc smart UPS安装有管理卡(似乎是AP-9631),服务器环境有FreeBSD、Windows Server、Linux(CentOS、Ubuntu)
实际使用中有如下问题需要注意:
1、一旦安装有管理卡,UPS上自带的串口是不能再使用的
2、因为是smart UPS,apcupsd在关闭服务器之后会调用重启ups指令,这就会有如下一些问题
a、如果apcups...
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其他好文 时间:
2014-05-18 06:43:01
阅读次数:
277
对于本题,想到一个中序遍历后,判别是否为回文串的方法,却WA多次
class Solution {
public:
vector vectorValue;
void inOrder(TreeNode* root)
{
if(root!=NULL)
{
inOrder(root->left);...
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其他好文 时间:
2014-05-18 06:38:58
阅读次数:
294
【题目】
Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero.
Note:
Elements in a triplet (a,b,c) must be in non-descending order. (ie, a ≤ b ≤ c)
The so...
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其他好文 时间:
2014-05-18 03:15:50
阅读次数:
287