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
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179
题目
Given an array of integers, find two numbers such that they add up to a specific target number.
The function twoSum should return indices of the two numbers such that they add up to the...
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其他好文 时间:
2014-06-18 12:05:44
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244
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
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227
题目
Write a function to find the longest common prefix string amongst an array of strings.
方法
从第一个字符开始,判断是否相同。
public String longestCommonPrefix(String[] strs) {
if (strs ...
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其他好文 时间:
2014-06-18 11:18:30
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205
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 ...
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其他好文 时间:
2014-06-17 22:39:41
阅读次数:
274
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
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292
Given two words word1 and word2, find the minimum number of steps required to convert
word1 to word2. (each operation is counted as 1 step.)
You have the following 3 operations permitted...
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其他好文 时间:
2014-06-17 21:43:38
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219
十六. 文件查找命令find: 下面给出find命令的主要应用示例: /> ls -l #列出当前目录下所包含的测试文件 -rw-r--r--. 1 root root 48217 Nov 12 00:57 install.log -rw-r--r--. 1 root root 37 Nov 12 ...
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系统相关 时间:
2014-06-17 14:45:55
阅读次数:
284
1. find find pathname -options [-print -exec -ok] 让我们来看看该命令的参数: pathname find命令所查找的目录路径。例如用.来表示当前目录,用/来表示系统根目录。 -print find命令将匹配的文件输出到标准输出。 -exec ...
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系统相关 时间:
2014-06-17 14:38:57
阅读次数:
383
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:
2014-06-17 14:35:50
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297