How to get combinations of non-adjacent elements of the list

Question

I want combinations of non- adjacent elements of the list

Answer 1

You can use the permutations() function by importing the itertools module

Answer 2

Input : [1,2,3,4,5]
Output : [[1,3,5],[2,4],[1,4],[2,5],[5,1],[3,5],[1,3]]
like this
those are non-adjacent elements

Answer 3

Kamil Hamid but I need non-adjacent elements. If you know how plz send the code

Answer 4

Do you need a non adjacent elements? Or just in general

Answer 5

Combinations of non-adjacent elements

Answer 6

All combinations?

Answer 7

Yes

Answer 8

Start your code, link it in the question using + button and describe your difficulties. This way, you learn as you get help.

Answer 9

Emerson Prado sir but I don't know the logic of getting combinations of non-adjacent elements of the list. So I am not able to write the code. If you get logic sir plz send me your code.

Answer 10

something like this?

basically creating a list of slices separated by 2 steps --> a[i::2] but also becoming separated by more and more steps --> a[i::2+j] and calling the function recursively until all are reduced to 2-item lists.

revised my code. It seems like passing mutable data like empty list as function argument have the unexpected side-effect of values in the list accumulating for subsequent function calls.

discussion here:
https://stackoverflow.com/questions/366422/what-is-the-pythonic-way-to-avoid-default-parameters-that-are-empty-lists

used the suggested hack and the program seems to be working better now.

https://code.sololearn.com/cA96NYIlZ9Ip/?ref=app