题目：Given a binary tree, return thepreordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[1,2,3]....
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其他好文 时间：
2014-06-26 16:03:52
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296
题目：Given a binary tree, return theinordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[1,3,2].N...
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其他好文 时间：
2014-06-26 16:02:42
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172
题目：Given a binary tree, return thepostordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[3,2,1]...
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其他好文 时间：
2014-06-26 15:59:16
阅读次数：
207
Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area.时间复杂度O(n^3)，最大全1子矩阵，利用直方图求解，可以参考对...
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其他好文 时间：
2014-06-26 15:08:46
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164
【题目】
There are N gas stations along a circular route, where the amount of gas at station i is gas[i].
You have a car with an unlimited gas tank and it costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an ...
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其他好文 时间：
2014-06-26 13:27:05
阅读次数：
231
【题目】
Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors.
OJ's undirected graph serialization:
Nodes are labeled uniquely.
We use # as a separator for each node, and , as a separator for node label and each ne...
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其他好文 时间：
2014-06-26 06:48:16
阅读次数：
285
在ARC项目中使用performSelector:withObject:函数出现“performSelector may cause a leak because its selector is unknown”。在stackoverflow找到了一个解决方案，地址：http://stackover...
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其他好文 时间：
2014-06-25 13:03:01
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270
Objective-C is a class-based object system. Each object is an instance of some class; the object'sisapointer points to its class. That class describ.....
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其他好文 时间：
2014-06-25 11:48:57
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162
Given a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a multiple ofkthen left-o...
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其他好文 时间：
2014-06-25 11:10:16
阅读次数：
163
【题目】
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 consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4.
Your algorithm should run...
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其他好文 时间：
2014-06-25 07:55:42
阅读次数：
244
