题目：032 Longest Valid Parentheses这道题是典型的堆栈应用class Solution: # @param {string} s # @return {integer} def longestValidParentheses(self, s): ...
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其他好文 时间：
2015-07-14 13:18:22
阅读次数：
102
@requires_authorization
@author johnsondu
@create_time 2015.7.13 11:03
@url [valid parentheses](https://leetcode.com/problems/valid-parentheses/)
/*****************
* 类别： 栈模拟判断
* 时间复杂度： O(n)
* 空间复杂度...
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其他好文 时间：
2015-07-14 11:22:05
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97
Question：Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a ca...
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其他好文 时间：
2015-07-14 09:48:40
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118
Validate if a given string is numeric.Some examples:"0"=>true" 0.1 "=>true"abc"=>false"1 a"=>false"2e10"=>trueNote:It is intended for the problem stat...
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其他好文 时间：
2015-07-13 20:22:00
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138
495.Which statement is true regarding the VALIDATE DATABASE command?
A. It checks the database for intrablock corruptions only.
B. It checks for block corruption in the valid backups of the database...
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其他好文 时间：
2015-07-13 14:05:35
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140
125 Valid Palindrome链接：https://leetcode.com/problems/valid-palindrome/
问题描述：
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For exampl...
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其他好文 时间：
2015-07-13 10:17:15
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145
521.You notice that a job in a chain has not completed on a nonconstrained RAC database. Which of
these are valid reasons why that might occur?
A. The job priority is 1 and the resource consumer gro...
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其他好文 时间：
2015-07-12 14:18:05
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174
题目：
Given a string containing just the characters '(' and ')',
find the length of the longest valid (well-formed) parentheses substring.
For "(()", the longest valid parentheses substring is...
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编程语言 时间：
2015-07-12 12:55:23
阅读次数：
140
https://leetcode.com/problems/valid-phone-numbers/
# Read from the file file.txt and output all valid phone numbers to stdout.
awk '/^([0-9]{3}-|\([0-9]{3}\) )[0-9]{3}-[0-9]{4}$/{print $0}' fi...
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其他好文 时间：
2015-07-11 15:13:34
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123
I guess some of you may have noticed that this seemingly simple problem has the lowest acceptance rate among all problems on the LeetCode OJ. Well, so...
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其他好文 时间：
2015-07-11 15:03:21
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129
