This problem can be solved elegantly using dynamic programming.We maintain two arrays:cnt[i][j] --- number of parentheses needed to add within s[i..j]...
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其他好文 时间:
2015-06-22 19:12:15
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202
Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.
If the fractional part is repeating, enclose the repeating part in parentheses.
...
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其他好文 时间:
2015-06-22 15:03:43
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181
题目:Implement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses), the plus+or mi...
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编程语言 时间:
2015-06-20 11:46:17
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185
Basic Calculator问题:Implement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses)...
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其他好文 时间:
2015-06-17 23:06:49
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192
Implement a basic calculator to evaluate a simple expression string.The expression string may contain open ( and closing parentheses ), the plus + or ...
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编程语言 时间:
2015-06-15 22:02:12
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292
Basic Calculator
Implement a basic calculator to evaluate a simple expression string.
The expression string may contain open ( and closing parentheses ),
the plus + or minus sign -, non-nega...
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其他好文 时间:
2015-06-15 16:26:59
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151
Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest...
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其他好文 时间:
2015-06-15 13:04:56
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82
Implement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses), the plus+or minus...
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其他好文 时间:
2015-06-15 09:11:32
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122
题意:判断一个是否是合法的,此式子合法的条件是: 1.空串是合法的 2.如果A和B都是合法的, 那么AB也是合法的 3.如果A是合法的,那么(A)和[A]也是合法的思路: 可以用堆栈的方法,如果读入一个左符号,则压栈,反之,从栈中弹出一个符号,如果是对应的左符号,则继续,如果不能...
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其他好文 时间:
2015-06-14 13:45:13
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110
【题目】
Implement a basic calculator to evaluate a simple expression string.
The expression string may contain open ( and closing parentheses ),
the plus + or minus sign -, non-negative integer...
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其他好文 时间:
2015-06-14 12:31:38
阅读次数:
122