permutations

LeetCode 47 - Permutations II

Given a collection of numbers that might contain duplicates, return all possible unique permutations.
yuanhsh·2015-04-11 02:00

SCU oj 4424 Permutations（递推）

题目链接4424:PermutationsSubmityoursolution   Discussthisproblem   BestsolutionsDescription GivenNdistinctelements,howmanypermutationswecangetfromallthepossiblesubsetoftheelements? Input Thefirstlineisani
madaidao·2015-04-09 21:00

【LeetCode】 Permutations 排列生成算法之字典序法

字典序排序生成算法字典序法就是按照字典排序的思想逐一产生所有排列。例如，由1,2,3,4组成的所有排列，从小到大的依次为：1234,1243,1324,1342,1423,1432, 2134,2143,2314,2341,2413,2431, 3124,3142,3214,3241,3412,3421, 4123,4132,4213,4231,4312,4321.分析这种过程，看后一个排列与前一
ljiabin·2015-04-08 17:00

leetcode:Permutations

classSolution{ vector>ret; intN; public: voidperm(vector&num,inti){ if(i==N){ ret.push_back(num); } for(intj=i;j>permute(vector&num){ //StarttypingyourC/C++solutionbelow //DONOTwriteintmain()functi
majing19921103·2015-04-01 16:00

leetcode || 47、 Permutations II

problem：Givenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample,[1,1,2] havethefollowinguniquepermutations:[1,1,2], [1,2,1],and [2,1,1].HideTags Backtracking
hustyangju·2015-03-30 16:00

leetcode || 46、Permutations

problem：Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].HideTags Backtracking题意：给定一个序列，输
hustyangju·2015-03-30 15:00

[LeetCode 46 & 47] Permutations I & II

题目链接：permutations相似题型：1.[LeetCode39&40]CombinationSumI&II2.[LeetCode78]Subsets3.
xiaoo_gan·2015-03-29 18:41

Misha and Permutations Summation 康拓展开+树状数组+二分

康拓展开+树状数组+二分:  详解D.MishaandPermutationsSummationtimelimitpertest2secondsmemorylimitpertest256megabytesinputstandardinputoutputstandardoutputLet'sdefinethesumoftwopermutations p and q ofnumbers 0, 1, .
u012797220·2015-03-25 23:00

[LeetCode] Permutations II 全排列之二

  Given a collection of numbers that might contain duplicates, return all possible unique permutations
·2015-03-23 14:00

[LeetCode] Permutations 全排列

  Given a collection of numbers, return all possible permutations.
·2015-03-23 08:00

[LeetCode] Permutation Sequence 序列排序

unique permutations.
·2015-03-23 01:00

UVa:11925 Generating Permutations

题意：由一个排列，给两种操作（1，交换头两个数字；2，将第一个数字放到最后）。问从由一个升序原始序列1，2，3...n变成给定排列的操作序列是什么？思路：注意题意，不要搞错了，是从123...变成给定排列，而不是给的排列变成123..这样。显然从给定的变成有序状态比较好做，所以可以逆向思考。操作1不变，操作2等价于将尾部数字放到头部，这样最后只需要逆序输出操作序列即可。具体做法用操作1每次维护头部
kkkwjx·2015-03-15 12:00

Permutations II

题目链接：PermutationsIIGivenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample,[1,1,2]havethefollowinguniquepermutations: [1,1,2],[1,2,1],and[2,1,1]. 这道题的要求是给定一组
makuiyu·2015-03-03 09:00

Permutations

题目链接：PermutationsGivenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3]havethefollowingpermutations: [1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],and[3,2,1]. 这道题的要求是给定一组数字，生成所有的排列组合。1.递
makuiyu·2015-03-03 09:00

Permutations Leetcode Python

Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].Thisproblemisexponential.WecanuseoneO(n)
hyperbolechi·2015-03-03 08:00

[经典面试题]排列组合专题

[LeetCode]31.NextPermutation[LeetCode]46.Permutations[LeetCode]47.PermutationsIISTL系列之十全排列(百度迅雷笔试题)[LeetCode
SunnyYoona·2015-02-28 18:00

LeetCode 47.Permutations II

题目：Givenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample,[1,1,2] havethefollowinguniquepermutations:[1,1,2], [1,2,1],and [2,1,1].分析与解答：这个题比上个题目更难了，问题的关键在于如
caishenfans·2015-02-26 01:00

LeetCode 46.Permutations

题目：Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].分析与解答：简单的递归dfs即可，注意不要重复了。classSolutio
caishenfans·2015-02-25 23:00

Codeforces 513B2 or 513B1 Permutations 策略题

题目链接：B1难度 http://codeforces.com/contest/513/problem/B1 (n #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #includ
u013738743·2015-02-25 23:00

Permutations

Youaregivenapermutationpofnumbers1, 2, …, n.Let’sdefinef(p)asthefollowingsum:Findthelexicographicallym-thpermutationoflengthninthesetofpermutationshavingthemaximumpossiblevalueoff(p).InputThesinglelin
Guard_Mine·2015-02-09 17:00

Codeforces 513B2 - Permutations (思维)

题意P为一个序列。定义F(p)=∑ni=1∑nj=imin(pi,pi+1,...,pj)现在要求输出所有满足F(n)最大的序列中字典序第k大的序列。思路先求出怎样的序列能满足F(p)最大。假设现在是一个空的序列，那么1是最小的元素，它只能被放在序列的最前面或者最后面。因为如果放在中间产生的结果必定小。之后考虑2，也和1一样。把1填的那个位置去除之后2也只能放在剩下来的最前面或者最后面。以此类推。
u014247806·2015-02-08 14:00

Codeforces Round #285 Div.1 B Misha and Permutations Summation

题意：给出两个排列，求出每个排列在全排列的排行，相加，模上n!（全排列个数)得出一个数k，求出排行为k的排列。解法：首先要得出定位方法，即知道某个排列是第几个排列。比如 (0, 1, 2), (0, 2, 1), (1, 0, 2), (1, 2, 0), (2, 0, 1), (2, 1, 0).拿排列(1,2,0)来说，首位是1,前面有cnt=1个小于1的没被用过的数(0)，所以它的排行要加上
u013007900·2015-01-29 20:00

[C++]LeetCode: 120 Permutations II

returnallpossibleuniquepermutations.Forexample,[1,1,2] havethefollowinguniquepermutations:[1,1,2], [1,2,1],and [2,1,1].思路：这道题和Permutations
cinderella_niu·2015-01-25 10:00

Misha and Permutations Summation 康托展开 树状数组+二分

D.MishaandPermutationsSummationtimelimitpertest2secondsmemorylimitpertest256megabytesinputstandardinputoutputstandardoutputLet'sdefinethesumoftwopermutationspandqofnumbers0, 1, ..., (n - 1)aspermutati
corncsd·2015-01-23 19:00

[C++]LeetCode: 115 Permutations （求一组数的全排列）

题目：Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3]havethefollowingpermutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],and[3,2,1].Answer1:树（避免标记一个数字是否被使用）思路：我们来观察一下问题，是求解一组数
Cindy_niu·2015-01-20 21:44

[C++]LeetCode: 115 Permutations （求一组数的全排列）

题目：Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].Answer1:树（避免标记一个数字是否被使用）思路：我们来观察一下问题，
cinderella_niu·2015-01-20 21:00

[LeetCode]47.Permutations II

【题目】Givenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample,[1,1,2] havethefollowinguniquepermutations:[1,1,2], [1,2,1],and [2,1,1].【分析】这个题跟[LeetCode]46.Perm
SunnyYoona·2015-01-19 12:00

[LeetCode]46.Permutations

【题目】Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].【分析】无【代码】/**************************
SunnyYoona·2015-01-16 16:00

codeforces 501D Misha and Permutations Summation（康拓展开+数据结构）

题目链接MishaandPermutationsSummationtimelimitpertest2secondsmemorylimitpertest256megabytesinputstandardinputoutputstandardoutputLet'sdefinethesumoftwopermutations p and q ofnumbers 0, 1, ..., (n - 1) asp
madaidao·2015-01-15 14:00

Misha and Permutations Summation 康拓展开。

题目地址 http://codeforces.com/contest/504/problem/B    这道题目让我更深入的了解了康拓展开。以前只是在做8数码的时候接触了康拓展开了。在比赛的时候想到了康拓展开，但是不知道怎么逆展开，所以没做出来。先介绍一下康拓展开。康拓展开：把一个排列展开成如下形式：X=a[n]*(n-1)!+a[n-1]*(n-2)!+...+a[i]*(i-1)!+...+a
u012127882·2015-01-14 16:00

Gargari and Permutations

D.GargariandPermutationstimelimitpertest2secondsmemorylimitpertest256megabytesinputstandardinputoutputstandardoutputGargarigotboredtoplaywiththebishopsandnow,aftersolvingtheproblemaboutthem,heistrying
S_Black·2015-01-09 15:00

[LeetCode]47 Permutations II

https://oj.leetcode.com/problems/permutations-ii/http://blog.csdn.net/linhuanmars/article/details/21570835public
furuijie8679·2015-01-03 09:55

[LeetCode]47 Permutations II

https://oj.leetcode.com/problems/permutations-ii/http://blog.csdn.net/linhuanmars/article/details/21570835public
furuijie8679·2015-01-03 09:55

[LeetCode]47 Permutations II

https://oj.leetcode.com/problems/permutations-ii/http://7371901.blog.51cto.com/7361901/1598382http://
furuijie8679·2015-01-02 09:49

[LeetCode]46 Permutations

https://oj.leetcode.com/problems/permutations/http://fisherlei.blogspot.com/2012/12/leetcode-permutations.htmlpublic
furuijie8679·2015-01-02 09:07

[LeetCode]46 Permutations

https://oj.leetcode.com/problems/permutations/http://fisherlei.blogspot.com/2012/12/leetcode-permutations.htmlpublic
furuijie8679·2015-01-02 09:07

LeetCode：Permutations

Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].//Source:https://oj.leetcode.com/problem
hnuzengchao·2014-12-26 17:00

【LeetCode】Permutations II 解题报告

【题目】Givenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample,[1,1,2] havethefollowinguniquepermutations:[1,1,2], [1,2,1],and [2,1,1].【解析】题意：求一个数组的全排列，与【LeetCo
ljiabin·2014-12-17 11:00

Permutations II

Givenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample,[1,1,2]havethefollowinguniquepermutations:[1,1,2],[1,2,1],and[2,1,1].classSolution{ public: vector>
zzyafyj·2014-12-02 21:00

Permutations

Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3]havethefollowingpermutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],and[3,2,1].classSolution{ public: vector>permute(vector
zzyafyj·2014-12-02 20:00

CC150 8.4

8.4 Writeamethodtocomputeallpermutationsofastring.ThisisaverysimilarquestiontoCC8.3 static Collection permutations
furuijie8679·2014-12-01 14:23

LeetCode(47) PermutaionsII

题目如下：分析如下:借助上一篇的permutations的第二个思路，这道题目变得比较简单。
feliciafay·2014-11-21 16:00

LeetCode(46) Permutations

题目如下：Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3]havethefollowingpermutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],and[3,2,1].分析如下：两种思路。第一种，逐步插入生成。第二种，通过交换生成。以[1,2,3]为
feliciafay·2014-11-21 15:00

LeetCode(44)Permutations

题目如下：Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3]havethefollowingpermutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],and[3,2,1].思考分析:如果要生成[1,2,3]的所有排列。则先生成[1,2]的所有排列[1,2
feliciafay·2014-11-12 03:00

[LeetCode] Permutations II

Givenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample,[1,1,2] havethefollowinguniquepermutations:[1,1,2], [1,2,1],and [2,1,1].classSolution{ public: vector
hale1007·2014-11-01 18:00

[LeetCode] Permutations

Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].classSolution{ public: vector>permute(ve
hale1007·2014-11-01 18:00

LeetCode 106 Permutations II

returnallpossibleuniquepermutations.Forexample,[1,1,2]havethefollowinguniquepermutations:[1,1,2],[1,2,1],and[2,1,1].分析：这和Permutations
ustc_summer·2014-10-30 10:00

LeetCode 107 Permutations

Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3]havethefollowingpermutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],and[3,2,1].分析：全排列问题，这是两道题里第一道，即没有重复元素的全排列。回溯问题，DFS。具体思路是：
ustc_summer·2014-10-30 09:00

Gargari and Permutations 多序列LIS+dp好题

http://codeforces.com/contest/463/problem/D求k个序列的最长公共子序列。k #include #include #include #include #include #include #include #include #include usingnamespacestd; #defineRD(x)scanf("%d",&x) #defineRD2(x,y
u012774187·2014-10-24 22:00

【LeetCode】Permutations 解题报告

全排列问题。常用的排列生成算法有序数法、字典序法、换位法(Johnson(Johnson-Trotter)、轮转法以及Shiftcursorcursor*(Gao&Wang)法。【题目】Givenacollectionofnumbers,returnallpossiblepermutations.Forexample,[1,2,3] havethefollowingpermutations:[1,
ljiabin·2014-10-16 20:00
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