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：
2014-08-31 09:18:11
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203
[ 问题: ]
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
直译：给定一个字符串，该串包含字符'(', ')', '{', '}', '[', ']'， 请判断它是不是有效的
The brackets must close in the correct order, "()" and "()[]{}" are al...
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其他好文 时间：
2014-08-29 16:11:48
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195
The GPG keys listed for the "Extra Packages for Enterprise Linux 5 - x86_64" repository are already installed but they are not correct for this packag...
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其他好文 时间：
2014-08-28 19:46:05
阅读次数：
503
Problem 33
The fraction 49/98 is a curious fraction, as an inexperienced mathematician in attempting to simplify it may incorrectly believe that49/98 = 4/8, which is correct, is obtained by cance...
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其他好文 时间：
2014-08-22 16:17:19
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172
Here are a few problems that you might be having:1 - Your production configuration may not be correct. This is particularly likely if you started out ...
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其他好文 时间：
2014-08-21 09:46:13
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178
今天在ubuntu下安装任何软件都提示以下错误：You might want to run 'apt-get -f install' to correct these:The following packages have unmet dependencies:kate : Depends: kde...
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其他好文 时间：
2014-08-16 13:49:20
阅读次数：
454
approach 英 [?'pr??t?] 美 [?'prot?] n. 方法；途径；接近vt. 接近；着手处理vi. 靠近emulate 英 ['emj?le?t] 美 ['?mjulet] vt. 仿真；模仿；尽力赶上；同…竞争n. 仿真；仿效correct 英 ...
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其他好文 时间：
2014-08-15 19:32:49
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204
401.Which of the following are correct about block media recovery? (Choose all that apply.)A. Physical and logical block corruption is recorded automa...
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其他好文 时间：
2014-08-14 23:29:56
阅读次数：
865
Parentheses BalanceYou are given a string consisting of parentheses () and []. A string of this type is said to be correct:(a)if it is the empty stri....
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其他好文 时间：
2014-08-10 18:21:20
阅读次数：
173
Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct ...
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其他好文 时间：
2014-08-10 15:23:20
阅读次数：
215
