Given a stringS, find the longest palindromic
substring inS. You may assume that the maximum length ofSis 1000, and there
exists one unique longest pa...
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其他好文 时间:
2014-05-18 19:39:55
阅读次数:
355
select查询
mongodb使用find或者findOne来查询:
find批量查询。
findOne是查询一条记录。
find有两个参数: 第一个查询条件, 第二个查询返回的字段。
下面是mongodb与sql查询的对应关系表:...
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数据库 时间:
2014-05-18 18:30:49
阅读次数:
311
这个问题最早有人报告说,在升级了10.9.3的机器上,用户目录(/Users)会在Finder中消失。但是很多人没有这个问题。经过多人的反复查证,最后锁定在iTunes 11.2更新上。如果用户打开了iCloud中的Find My Mac功能,那么安装了iTunes 11.2的更新后,就会产生这样的问题,而且用户目录/Users的权限会被改为777,也就是任何人都可以在里面读写删除。这个很危险!而...
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其他好文 时间:
2014-05-18 15:35:54
阅读次数:
233
4Sum
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....
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其他好文 时间:
2014-05-18 13:49:09
阅读次数:
306
【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
【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】
You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenation of each word in L exactly once and without any intervening characters.
For example, given:
S:...
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其他好文 时间:
2014-05-18 08:31:48
阅读次数:
228
3SumClosest
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....
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其他好文 时间:
2014-05-18 05:57:48
阅读次数:
244
Given a triangle, find the minimum path sum
from top to bottom. Each step you may move to adjacent numbers on the row
below.For example, given the fol...
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其他好文 时间:
2014-05-18 02:11:19
阅读次数:
302
Given an unsorted array of integers, find the
length of the longest consecutive elements sequence.For example,Given[100, 4,
200, 1, 3, 2],The longest ...
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其他好文 时间:
2014-05-18 01:52:45
阅读次数:
317