Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.For "(()", the lon...
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编程语言 时间:
2015-05-07 20:11:27
阅读次数:
154
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
For example,
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" is not a ...
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其他好文 时间:
2015-05-07 16:48:34
阅读次数:
78
Title:Given a string containing only digits, restore it by returning all possible valid IP address combinations.For example:Given"25525511135",return[...
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其他好文 时间:
2015-05-07 16:25:11
阅读次数:
92
responseMsg(); }else{ $wechatObj->valid(); } class wechatCallbackapiTest { public function valid() { $echoStr = $_GET["echostr"]; //valid signature , ...
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微信 时间:
2015-05-07 14:10:48
阅读次数:
268
代码$.extend($.validator.messages,{ required: "This field is required.", remote: "Please fix this field.", email: "Please enter a valid email a...
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其他好文 时间:
2015-05-07 08:43:56
阅读次数:
145
题目在这里:https://leetcode.com/problems/valid-parentheses/【标签】Stack; String【个人分析】这个题应该算是Stack的经典应用。先进后出 ( FILO) 的结构: 先来的左边括号跟后面的右边括号相匹配。【代码解释】创建一个栈,如果遇到的是...
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编程语言 时间:
2015-05-07 06:26:27
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161
DescriptionLet’s considerK-based numbers, containing exactlyNdigits. We define a number to be valid if itsK-based notation doesn’t contain two success...
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其他好文 时间:
2015-05-06 21:06:40
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131
selectt.idend_usr_id,t.end_user_nameend_usr_name,t.end_user_real_nameend_usr_nknm,t.end_user_passwordend_usr_pswd,t.end_user_birthdayend_usr_bthd,t.mobilemobl_num,t.phonephone_num,t.valid_mobile_phone_numbindg_mobl_num,t.end_user_emailend_usr_email,substr(t..
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数据库 时间:
2015-05-06 18:22:57
阅读次数:
458
Given 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 n...
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其他好文 时间:
2015-05-06 14:40:34
阅读次数:
97
这个题目leetcode上提示用动态规划,但是那样要O(n^2)。我自己想出了一个O(n)的算法,并提交通过。【题目】Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.
For "((...
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编程语言 时间:
2015-05-06 11:00:58
阅读次数:
123