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 subtre...
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其他好文 时间:
2015-01-27 00:29:27
阅读次数:
205
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana...
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其他好文 时间:
2015-01-26 20:56:06
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132
标题:Valid Sudoku通过率:27.2%难度:简单Determine if a Sudoku is valid, according to:Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where...
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其他好文 时间:
2015-01-26 19:09:45
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144
Given a stringsand a dictionary of wordsdict, add spaces insto construct a sentence where each word is a valid dictionary word.Return all such possibl...
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其他好文 时间:
2015-01-25 20:59:33
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172
Given a string containing only digits, restore it by returning all possible valid IP address combinations.
For example:
Given "25525511135",
return ["255.255.11.135", "255.255.111.35"]. (Order ...
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其他好文 时间:
2015-01-25 18:19:01
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219
题目:
Given a string containing just the characters '(', ')', '{', '}', '[' and ']',
determine if the input string is valid.
The brackets must close in the correct order, "()" and "()[]{}" are...
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其他好文 时间:
2015-01-25 16:44:04
阅读次数:
136
Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another express...
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其他好文 时间:
2015-01-25 07:37:13
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169
Valid NumberValidate 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 ...
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其他好文 时间:
2015-01-24 11:30:31
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198
发布ASP.NET MVC到IIS后出现错误: 1 System.Data.Entity.Core.MetadataException: Schema specified is not valid. Errors: 2 SysModel.ssdl(2,2) : error 0152: No Ent....
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Web程序 时间:
2015-01-24 06:43:21
阅读次数:
5503