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:
2014-05-22 15:28:54
阅读次数:
175
【题目】
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.
The Sudoku board could be partially filled, where empty cells are filled with the character '.'.
A partially filled sudoku which is valid.
Note:
A valid Sudoku board (par...
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其他好文 时间:
2014-05-22 09:58:54
阅读次数:
234
Description
You are given a string consisting of parentheses () and []. A string of this type is said to be correct:
(a)if it is the empty string(b)if A and B are correct, AB is correct,(c)...
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其他好文 时间:
2014-05-22 09:53:27
阅读次数:
295
11行制造了一个手机,手机名为wechatCallbackapiTest,这个手机有三个功能,一个功能是valid(),它的作用是签名和接口验证;另一个函数叫responseMsg(),这个该手机最重要的功能,就跟打电话一样;最后一个功能是checkSignature(),它是用来验证签名的。...
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微信 时间:
2014-05-22 07:02:37
阅读次数:
606
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:
2014-05-22 00:49:57
阅读次数:
311
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:
2014-05-21 21:20:54
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291
Generate Parentheses DFS...
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其他好文 时间:
2014-05-21 16:40:29
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151
Valid Parentheses括号匹配问题...
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其他好文 时间:
2014-05-21 16:02:30
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161
5道题目分别是:【Largest Rectangle in Histogram】、【Minimum Path Sum】、【Jump Game】、【Jump Game II 】、【Valid Number】,由于有一些题目不需要发一整篇博文来记录,所以就将这些题目以一篇博文5道来记录。...
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其他好文 时间:
2014-05-21 03:05:33
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481
【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 "()", which has length = 2.
Another example is ")()())", whe...
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其他好文 时间:
2014-05-20 16:39:07
阅读次数:
280