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Questions tagged permutation

29 questions

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34
votes
7
answers

How to generate all permutations of an array in sorted order?

c++ permutation
asked 2013-07-01T00:52:01.130
8
votes
2
answers

Number of ways to fill 3xN tiles with 2 x 1 dominoes (SPOJ: M3TILE)

c++ algorithm math permutation
asked 2013-05-05T20:02:49.263
88
votes
10
answers

JavaScript - Generating combinations from n arrays with m elements

javascript permutation combinations
asked 2013-03-08T16:37:29.390
13
votes
6
answers

number to unique permutation mapping of a sequence containing duplicates

algorithm math mapping permutation combinatorics
asked 2013-01-08T09:38:50.660
15
votes
2
answers

Please explain this algorithm to get all permutations of a String

ansible python string recursion permutation
asked 2012-12-23T04:06:43.367
10
votes
1
answers

Finding unique permutations efficiently

matlab math permutation combinatorics
asked 2012-10-28T14:34:25.333
16
votes
7
answers

Random sequence iteration in O(1) memory?

c++ stl iterator complexity-theory permutation
asked 2012-09-17T13:41:55.317
9
votes
6
answers

java string permutations and combinations lookup

java algorithm permutation combinations
asked 2012-02-04T03:47:01.180
32
votes
6
answers

Secret Santa - Generating 'valid' permutations

algorithm wolfram-mathematica permutation combinatorics
asked 2011-12-22T20:58:15.747
14
votes
1
answers

algorithm to find square chained permutations

algorithm permutation
asked 2011-12-17T01:27:17.377
25
votes
2
answers

Find all perfect squares that are a permutation of some 300 digits

algorithm permutation
asked 2011-09-18T05:37:19.927
129
votes
9
answers

How to randomize (or permute) a dataframe rowwise and columnwise?

r random permutation
asked 2011-06-21T08:17:42.270
10
votes
4
answers

Check if two arrays are cyclic permutations

algorithm language-agnostic cycle permutation
asked 2011-05-24T02:19:38.550
10
votes
2
answers

Reduce number of GWT permutations in maven build

gwt compilation permutation
asked 2011-01-19T20:02:49.370
10
votes
4
answers

Loop through different sets of unique permutations

algorithm loops permutation
asked 2010-12-31T05:50:43.523
11
votes
3
answers

Combinations and Permutations in F#

f# permutation combinatorics combinations
asked 2010-12-21T01:29:30.877
34
votes
6
answers

Generate permutations of list with repeated elements

python permutation
asked 2010-11-22T20:50:11.403
20
votes
6
answers

Generate all permutations of all lengths

permutation
asked 2010-11-02T04:51:03.500
12
votes
1
answers

Algorithm for permutations of operators and operands

algorithm language-agnostic permutation
asked 2010-10-16T06:37:36.373
17
votes
7
answers

Algorithm to count the number of valid blocks in a permutation

algorithm permutation
asked 2010-07-26T22:37:28.460
15
votes
4
answers

Regex to match all permutations of {1,2,3,4} without repetition

regex permutation regex-lookarounds
asked 2010-06-23T12:01:58.360
10
votes
5
answers

Is there an R function to get the number of permutations of n objects take k P(n,k)?

r permutation combinations
asked 2010-05-20T07:30:26.223
43
votes
13
answers

Permutation algorithm without recursion? Java

java recursion sequence permutation
asked 2010-05-09T20:35:18.953
34
votes
3
answers

algorithm for python itertools.permutations

python algorithm permutation
asked 2010-04-02T07:54:06.273
14
votes
1
answers

What are the Ruby equivalent of Python itertools, esp. combinations/permutations/groupby?

ruby combinations group-by permutation python-itertools
asked 2010-03-14T18:32:47.703
11
votes
8
answers

How to check if permutations have same parity?

python list permutation parity
asked 2009-10-01T10:11:59.280
22
votes
7
answers

How can I generate all permutations of an array in Perl?

perl algorithm arrays permutation
asked 2009-03-11T18:27:15.587
22
votes
4
answers

Creating multiple numbers with certain number of bits set

algorithm binary permutation combinations
asked 2009-02-03T11:50:31.190
30
votes
13
answers

How do you efficiently generate a list of K non-repeating integers between 0 and an upper bound N

arrays algorithm random permutation
asked 2008-10-01T17:21:30.637