Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest...
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其他好文 时间:
2015-06-15 13:04:56
阅读次数:
82
这道题思想上没什么难度,主要是许多的细节需要考虑,挺麻烦的,就没自己写了。class Solution {public: bool isNumber(string s) { string num = s; int i=0; while(num[...
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其他好文 时间:
2015-06-15 12:48:35
阅读次数:
93
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:
2015-06-15 06:54:37
阅读次数:
210
题目链接 题目要求: Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given"2552551...
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其他好文 时间:
2015-06-15 00:15:50
阅读次数:
113
题目链接 题目要求: Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a ...
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其他好文 时间:
2015-06-14 16:24:27
阅读次数:
115
Description:Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in ...
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其他好文 时间:
2015-06-14 10:56:21
阅读次数:
117
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之前每个版本的ipa包打出来都才20M出头,后来不知道从哪个版本起打的包每次都将近40M,但是工程中也没有明显的增加很大第三方类或者图片、静态文件。于是就开始了各种瘦身计划:压缩...
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其他好文 时间:
2015-06-13 23:11:59
阅读次数:
456
This problem is a nice extension of the Valid Parentheses problem.There are several ways to solve it. The first idea is also to use a stack. However, ...
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其他好文 时间:
2015-06-13 16:56:41
阅读次数:
130
This is a classic problem of the application of stacks. The idea is, each time we meet a(,{or[, we push it to a stack. If we meet a),}or], we check if...
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其他好文 时间:
2015-06-13 15:35:04
阅读次数:
105
Validate Binary Search TreeGiven a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtree of a node contains only nodes with keys less than...
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其他好文 时间:
2015-06-13 14:21:53
阅读次数:
103