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:
2014-07-05 17:20:00
阅读次数:
176
Given a binary tree, determine if it is a valid binary search tree (BST).
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其他好文 时间:
2014-07-03 19:36:49
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196
Given a string containing only digits, restore it by returning all possible valid IP address combinations.
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其他好文 时间:
2014-07-02 14:45:41
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220
题目
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" i...
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其他好文 时间:
2014-07-02 09:49:04
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271
【题目】
Evaluate the value of an arithmetic expression in Reverse Polish Notation.
Valid operators are +, -, *, /. Each operand may be an integer or another expression.
Some examples:
["2", "1", "+", "3", "*"] -> ((2 + 1) * 3) -> 9
["4", "13", "5", "/...
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其他好文 时间:
2014-07-02 07:43:36
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212
Valid Parentheses:Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.The brackets m...
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其他好文 时间:
2014-07-01 21:24:05
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180
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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其他好文 时间:
2014-07-01 09:09:06
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156
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:
2014-06-30 23:46:14
阅读次数:
288
昨天客户突然要求将某个角色的所有权限都不分页的放在一个页面修改,本地测试OK,通过;但发布后,点击该页面提交后一直报下面的错误:异常信息: Operation is not valid due to the current state of the object.错误源:System.Web堆栈信息...
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其他好文 时间:
2014-06-30 22:55:35
阅读次数:
407
错误代码:No
architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=x86_64, VALID_ARCHS=armv7 armv7s)
1 xcodebuild 这个target的时候命令行报错。(yes 改为no)
LY_ACTIVE_ARCH=YES, active arch=x86...
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其他好文 时间:
2014-06-30 18:04:12
阅读次数:
219