class Solution { public: vector >
permuteUnique(vector &num) { vector > result; if (num.size() path;
dfs(n...
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其他好文 时间:
2014-06-29 14:09:34
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220
戳我去解题Given a collection of numbers, return all
possible permutations.For example,[1,2,3]have the following
permutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1...
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其他好文 时间:
2014-06-10 08:42:11
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184
问题描述:
A permutation is an ordered arrangement of objects. For example, 3124 is one possible permutation of the digits 1, 2, 3 and 4. If all of the permutations are listed numerically or alphabeti...
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其他好文 时间:
2014-06-10 06:13:21
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299
The set[1,2,3,…,n]contains a total ofn! unique
permutations.By listing and labeling all of the permutations in order,We get the
following sequence (ie...
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其他好文 时间:
2014-06-04 19:56:17
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347
Given a collection of numbers that might
contain duplicates, return all possible unique permutations.For
example,[1,1,2]have the following unique perm...
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其他好文 时间:
2014-06-04 19:10:54
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240
Given a collection of numbers, return all
possible permutations.For example,[1,2,3]have the following
permutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,...
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其他好文 时间:
2014-06-04 19:10:16
阅读次数:
155
问题:
Given a collection of numbers, return all possible permutations.
For example,
[1,2,3] have the following permutations:
[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],
and [3,2,1].
分析:
...
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其他好文 时间:
2014-06-01 15:04:42
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259
问题:
对于给定序列1...n,permutations共有 n!个,那么任意给定k,返回第k个permutation。0
分析:
这个问题要是从最小开始直接到k,估计会超时,受10进制转换为二进制的启发,对于排列,比如 1,2,3 是第一个,那么3!= 6,所以第6个就是3,2,1。也就是说,从开始的最小的序列开始,到最大的序列,就是序列个数的阶乘数。那么在1,3 , 2的时候呢?调整一...
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其他好文 时间:
2014-06-01 14:03:55
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257
问题:
Given a collection of numbers that might contain duplicates, return all possible unique permutations.
For example,
[1,1,2] have the following unique permutations:
[1,1,2], [1,2,1],
and...
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其他好文 时间:
2014-06-01 13:03:12
阅读次数:
324
【题目】
The set [1,2,3,…,n] contains a total of n! unique permutations.
By listing and labeling all of the permutations in order,
We get the following sequence (ie, for n = 3):
"123"
"132"
"213"
"231"
"312"
"321"
Given n and k, return the kth permutation ...
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其他好文 时间:
2014-05-25 06:13:37
阅读次数:
276