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uva 11077 - Find the Permutations(置换)
题目链接:uva 11077 - Find the Permutations 题目大意:给定一个1~n的排序,可以通过一系列的交换变成1,2,…,n, 给定n和k,统计有多少个排列至少需要交换k次才能变成有序的序列。 解题思路:给定一个序列P,可以将该序列看做是一个置换,从有序序列,开始,需要多少次回到有序序列。将P的循环分解,循环长度为1的需要0次,长度为2的需要1次,循环长度为...
分类:其他好文   时间:2014-08-13 13:11:16    阅读次数:275
[LeetCode] Permutations II
Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example, [1,1,2] have the following unique pe...
分类:其他好文   时间:2014-08-12 10:17:03    阅读次数:142
leetcode 刷题之路 77 Permutations II
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 [2,1...
分类:其他好文   时间:2014-08-11 17:49:32    阅读次数:201
LeetCode——Permutations
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]. 原题链接:https://oj...
分类:其他好文   时间:2014-08-10 10:25:50    阅读次数:265
Permutations II leetcode java
题目:Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2] have the following unique....
分类:编程语言   时间:2014-08-08 01:54:55    阅读次数:292
Permutations
问题:全排列class Solution {public: void dfs(vector &num,vector &vec2,vector >&vec1,int step,int vis[]) { if(step==num.size()) { ...
分类:其他好文   时间:2014-08-06 22:25:02    阅读次数:193
Permutations leetcode java
题目: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,....
分类:编程语言   时间:2014-08-03 10:09:25    阅读次数:193
LeetCode "Permutations"
Lexicographicallyalgorithms:1. Iterate array from back to front, and find the first decreasing point: 1,2,4,3 -- 42. Iterate array from back to front,...
分类:其他好文   时间:2014-08-02 05:11:02    阅读次数:199
hdu 2583 permutation 动态规划
Problem DescriptionPermutation plays a very important role in Combinatorics. For example ,1 2 3 4 5 and 1 3 5 4 2 are both 5-permutations. As everyone...
分类:其他好文   时间:2014-07-26 14:15:48    阅读次数:237
[LeetCode] Permutations
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,...
分类:其他好文   时间:2014-07-26 01:38:56    阅读次数:214
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