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combinatorics

Place N unique elements into all possible K groups with monotonicity maintaining

August 22, 2022 by Magenaut

Can anyone suggest a quick and efficient solution for splitting an array of N elements into K groups with monotonicity maintaining? For example:

Categories Python, Q&A Tags algorithm, combinatorics, list, python Leave a comment

How to generate all permutations of a list?

August 22, 2022 by Magenaut

How do you generate all the permutations of a list in Python, independently of the type of elements in that list?

Categories Python, Q&A Tags algorithm, combinatorics, permutation, python, python-2.5 Leave a comment

Permutations between two lists of unequal length

August 21, 2022 by Magenaut

I’m having trouble wrapping my head around a algorithm I’m try to implement. I have two lists and want to take particular combinations from the two lists.

Categories Python, Q&A Tags algorithm, combinatorics, itertools, list, python Leave a comment

Generating permutations with repetitions

August 20, 2022 by Magenaut

I know about itertools, but it seems it can only generate permutations without repetitions.

Categories Python, Q&A Tags combinatorics, permutation, python Leave a comment

Generate all permutations of a list without adjacent equal elements

August 17, 2022 by Magenaut

When we sort a list, like

Categories Python, Q&A Tags algorithm, combinatorics, python Leave a comment

Cartesian product of a dictionary of lists

August 15, 2022 by Magenaut

I’m trying to write some code to test out the Cartesian product of a bunch of input parameters.

Categories Python, Q&A Tags combinatorics, generator, python Leave a comment

N-D version of itertools.combinations in numpy

August 14, 2022 by Magenaut

I would like to implement itertools.combinations for numpy. Based on this discussion, I have a function that works for 1D input:

Categories Python, Q&A Tags combinatorics, itertools, numpy, python Leave a comment
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