Restore IP AddressesGiven a string containing only digits, restore it by returning all possible valid IP address combinations.For example:Given"255255...
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其他好文 时间：
2014-07-16 18:03:41
阅读次数：
157
A string is a sequence of characters and a list is a sequence of values, but a list of characters is not the same as a string. To convert from a strin...
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其他好文 时间：
2014-07-15 09:00:12
阅读次数：
244
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 nodes with keys less than the node's key.Th...
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其他好文 时间：
2014-07-13 16:53:01
阅读次数：
189
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
all va...
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其他好文 时间：
2014-07-13 16:11:26
阅读次数：
144
在Linux下执行svn add *时出现如下错误：svn: Valid UTF-8 data(hex: 4b)followed by invalid UTF-8 sequence(hex: fc 63 68 65)出现这个错误是因为svn库里有文件的名字不是utf-8编码的，这种情况对于中文来说很...
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系统相关 时间：
2014-07-13 08:03:13
阅读次数：
324
前几天发布应用时出现了如下所示的一段错误提示信息：weblogic.descriptor.DescriptorException: VALIDATION PROBLEMS WERE FOUNDproblem: cvc-enumeration-valid: string value '3.0' is ...
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Web程序 时间：
2014-07-13 00:53:05
阅读次数：
367
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", ...
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其他好文 时间：
2014-07-12 22:43:17
阅读次数：
267
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：
2014-07-12 20:10:54
阅读次数：
165
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 nodes with keys less than the node's key.Th...
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其他好文 时间：
2014-07-12 17:26:31
阅读次数：
256
当您试图从单独的线程更新一个win form时，您将得到如下错误信息："Cross-thread operation not valid: Control 'progressBar1' accessed from a thread other than the thread it was creat...
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数据库 时间：
2014-07-12 14:04:15
阅读次数：
337
