Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.
For example, given n = 3, a solution set is:
"((()))", "(()())", "(())()", "()(())", "()()...
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其他好文 时间:
2014-06-05 02:15:14
阅读次数:
262
Longest Valid Parentheses 最长有效括号对...
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其他好文 时间:
2014-06-05 01:16:14
阅读次数:
215
Givennpairs of parentheses, write a function to
generate all combinations of well-formed parentheses.For example, givenn= 3, a
solution set is:"((()))...
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其他好文 时间:
2014-06-04 22:30:30
阅读次数:
418
Given an integern, generate a square matrix
filled with elements from 1 ton2in spiral order.For example,Givenn=3,You should
return the following matri...
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其他好文 时间:
2014-06-04 19:28:23
阅读次数:
220
ParencodingsDescriptionLet S = s1 s2...s2n be a
well-formed string of parentheses. S can be encoded in two different ways: q By
an integer sequence P ...
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其他好文 时间:
2014-06-02 06:19:50
阅读次数:
185
【题目】
Given n, generate all structurally unique BST's (binary search trees) that store values 1...n.
For example,
Given n = 3, your program should return all 5 unique BST's shown below.
1 3 3 2 1
\ / / / \ ...
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其他好文 时间:
2014-06-01 15:33:45
阅读次数:
297
题目:
给定整数n,返回n对匹配的小括号字符串数组。
For example, given n = 3, a solution set is:
"((()))", "(()())", "(())()", "()(())", "()()()"
分析:
这种问题的模式是:1)问题的解有多个 ,2)每个解都是由多个有效的 ”步骤“ 组成的,3)变更以有解的某个或某些”步骤“ 可...
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其他好文 时间:
2014-05-31 22:28:45
阅读次数:
467
Sepearable 2D EDT, going to extend to 3D in
order to calculate the Signed Distance Function(Field)Cost 0.75s to generate the
SDF at 768^2
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其他好文 时间:
2014-05-28 03:13:14
阅读次数:
276
Let S = s1 s2...s2n be a well-formed string of
parentheses. S can be encoded in two different ways:q By an integer sequence P =
p1 p2...pn where pi is...
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其他好文 时间:
2014-05-26 22:07:33
阅读次数:
300
【题目】
Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order.
For example,
Given n = 3,
You should return the following matrix:
[
[ 1, 2, 3 ],
[ 8, 9, 4 ],
[ 7, 6, 5 ]
]
【题意】
给定整数n, 将1,2,3...nxn个数按螺旋旋转的方式填入n...
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其他好文 时间:
2014-05-25 07:08:17
阅读次数:
235