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...
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编程语言 时间：
2015-01-17 13:59:19
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171
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) mu...
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编程语言 时间：
2015-01-17 10:02:22
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232
Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?An obstacle and empty space i...
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其他好文 时间：
2015-01-16 23:38:32
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178
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where
the candidate numbers sums to T.
Each number in C may only be used once in the combina...
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其他好文 时间：
2015-01-16 16:47:18
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152
The Unique MSTTime Limit:1000MSMemory Limit:10000KTotal Submissions:21358Accepted:7560DescriptionGiven a connected undirected graph, tell if its minim...
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其他好文 时间：
2015-01-16 16:18:13
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172
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below).
The robot can only move either down or right at any point in time. The robot is trying to reach the ...
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其他好文 时间：
2015-01-15 23:56:23
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294
Follow up for "Unique Paths":
Now consider if some obstacles are added to the grids. How many unique paths would there be?
An obstacle and empty space is marked as 1 and 0 respectively
in the ...
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其他好文 时间：
2015-01-15 23:54:55
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206
题目：Given a string S,
find the longest palindromic substring in S.
You may assume that the maximum length of S is
1000, and there exists one unique longest palindromic substring.
思路：题目要求的s的一个最长回...
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编程语言 时间：
2015-01-15 23:54:08
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207
Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where
the candidate numbers sums to T.
The same repeated number may be chosen from C unlimited numb...
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其他好文 时间：
2015-01-15 18:17:48
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186
Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 unique BST's 1 .....
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其他好文 时间：
2015-01-14 22:37:54
阅读次数：
241
