Implement atoi to convert a string to an integer.
Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input ca...
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其他好文 时间：
2014-06-07 12:21:30
阅读次数：
284
Given a digit string, return all possible
letter combinations that the number could represent.A mapping of digit to
letters (just like on the telephon...
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其他好文 时间：
2014-06-06 17:50:38
阅读次数：
284
Subsets
Total Accepted: 13267 Total
Submissions: 48509My Submissions
Given a set of distinct integers, S, return all possible subsets.
Note:
Elements in a subset must be in non-desc...
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其他好文 时间：
2014-06-02 10:28:35
阅读次数：
186
Implementatoito convert a string to an
integer.Hint:Carefully consider all possible input cases. If you want a
challenge, please do not see below and ...
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其他好文 时间：
2014-06-02 08:51:43
阅读次数：
233
问题：
Given a collection of numbers, return all possible permutations.
For example,
[1,2,3] have the following permutations:
[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],
and [3,2,1].
分析：
...
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其他好文 时间：
2014-06-01 15:04:42
阅读次数：
259
问题：
Given a collection of numbers that might contain duplicates, return all possible unique permutations.
For example,
[1,1,2] have the following unique permutations:
[1,1,2], [1,2,1],
and...
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其他好文 时间：
2014-06-01 13:03:12
阅读次数：
324
【题目】
Given a string containing only digits, restore it by returning all possible valid IP address combinations.
For example:
Given "25525511135",
return ["255.255.11.135", "255.255.111.35"]. (Order does not matter)
【题意】
给定一个字符串，恢复并返回所有符合条件的IP串
【思路】...
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其他好文 时间：
2014-06-01 13:01:56
阅读次数：
295
【题目】
Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.
Below is one possible representation of s1 = "great":
great
/ gr eat
/ \ / g r e at
/ ...
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其他好文 时间：
2014-06-01 09:41:05
阅读次数：
196
【题目】
Given a collection of integers that might contain duplicates, S, return all possible subsets.
Note:
Elements in a subset must be in non-descending order.
The solution set must not contain duplicate subsets.
For example,
If S = [1,2,2], a solution ...
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其他好文 时间：
2014-06-01 08:51:06
阅读次数：
292
题目一：CombinationsGiven two integersnandk, return all
possible combinations ofknumbers out of 1 ...n.For example,Ifn= 4 andk= 2, a
solution is:[ [2,4],....
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其他好文 时间：
2014-05-31 20:01:02
阅读次数：
455
