题目:https://leetcode.com/problems/permutations/题目要求是求一个数组的全排列,试过很多非递归的方法都不成功,感觉这题有递归会方便很多。解题思路是这样的,从数组中选出一个数,然后对数组中剩下的数进行全排列;维持一个result集合,里面存的是已经完成全排列的...
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编程语言 时间:
2015-07-29 15:27:31
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122
【046-Permutations(求排列)】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题 Given a collection of numbers, return all possible permutations.
For example,
[1,2,3] have the following permutations:
[1,2,3], [1,...
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编程语言 时间:
2015-07-28 06:43:13
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129
这题跟前面的一个codeforces很像,,,,就是一个数一直映射,,,让式子回到原来,,,,,,的周期
先是纯模拟,,错了几回然后TLE:
#include
#include
using namespace std;
int t=0;
int a[1001],b[1001],c[1001];
int m;
int fuhe()
{
int i;
for(i...
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其他好文 时间:
2015-07-27 15:02:31
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97
问题叙述性说明: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 se...
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其他好文 时间:
2015-07-19 19:21:30
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88
one recursive approach to solve hdu 1016, list all permutations, solve N-Queens puzzle.
reference: the video of stanford cs106b lecture 10 by Julie Zelenski https://www.youtube.com/watch?v=NdF1QDTRkck...
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移动开发 时间:
2015-07-19 18:07:58
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176
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 [2,1,1]....
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其他好文 时间:
2015-07-17 22:50:50
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123
090 Subsets 2这道题就是要考虑重复的状况和 permutations 2 一样的排除重复可能的组合就是在当前位置,如果选择的值和前面那个值一样 则跳过不进行选择第二次class Solution: # @param {integer[]} nums # @return {in...
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其他好文 时间:
2015-07-16 16:21:34
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124
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""3...
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其他好文 时间:
2015-07-15 15:06:59
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199
The cube, 41063625 (3453), can be permuted to produce two other cubes: 56623104 (3843) and 66430125 (4053). In fact, 41063625 is the smallest cube
which has exactly three permutations of its digits ...
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其他好文 时间:
2015-07-14 18:21:53
阅读次数:
113
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], [2,3,1], [3,1,2],
and [3,2,1].
题意:
给...
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编程语言 时间:
2015-07-14 13:46:05
阅读次数:
380