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:
...
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其他好文 时间:
2014-06-18 12:17:57
阅读次数:
179
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.
In...
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其他好文 时间:
2014-06-18 12:03:16
阅读次数:
227
Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.
For example,
If n = 4 and k = 2, a solution is:
[
[2,4],
[3,4],
[2,3],
[1,2],
[1,3],
[1,4],
]...
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其他好文 时间:
2014-06-18 11:41:52
阅读次数:
156
题目
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.
For example, given n = 3, a solution set is:
"((()))", "(()())", "(())()", "()...
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其他好文 时间:
2014-06-17 22:59:06
阅读次数:
223
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 tr...
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其他好文 时间:
2014-06-17 22:04:49
阅读次数:
292
Behavioral things
are the dynamic parts of UML models. These are the verbs of a model, representing behavior over time and space. In all, there are three primary kinds of behavioral things.
行...
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其他好文 时间:
2014-06-17 21:47:37
阅读次数:
315
Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid dictionary word.Return all such po...
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其他好文 时间:
2014-06-17 21:15:35
阅读次数:
211
Passing a large number of parameters is not convenient. A better approach is to substitute all the parameters with only one and make it an object.
分类:
编程语言 时间:
2014-06-17 20:40:07
阅读次数:
185
权限范围的表示法如下:u:User,即文件或目录的拥有者。g:Group,即文件或目录的所属群组。o:Other,除了文件或目录拥有者或所属群组之外,其他用户皆属于这个范围。a:All,即全部的用户,包含拥有者,所属群组以及其他用户。有关权限代号的部分,列表于下:r:读取权限,数字代号为"4"。w:...
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其他好文 时间:
2014-06-17 15:57:11
阅读次数:
253
vimgdb安装vim-7.3.tar.bz2http://www.vim.org/sources.phpvimgdb-for-vim7.3 (this patch)https://github.com/larrupingpig/vimgdb-for-vim7.3Untar all files, a...
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数据库 时间:
2014-06-17 15:05:44
阅读次数:
351