-1

My list is[1,1,1,2,2,2] and the total combinations are 20 including input list The output should be like [1,1,2,1,2,2] [1,2,1,2,1,2] So on Up to 20 combinations The combinations must not be repititive Someone pls help me to find a solution

Guillaume
  • 5,497
  • 3
  • 24
  • 42
rakesh
  • 1
  • 1
  • Show us what you have tried so far? – pauli Mar 25 '18 at 15:34
  • Possible duplicate of [How to generate all permutations of a list in Python](https://stackoverflow.com/questions/104420/how-to-generate-all-permutations-of-a-list-in-python) – Primusa Apr 07 '18 at 04:06

1 Answers1

1

Python by default provides methods to help us find the permutations and combinations of a sequence. They come in a package known as itertools.

  1. first you will have to import permutations:

    from itertools import permutations

  2. Assuming that your list is stored in x

    i.e x=[1,1,1,2,2,2]

  3. Take any other variable. eg: P

    P= permutations(x)

    [P is basically a list of all the different permutations of the list x]

  4. for i in list(P):
    print(i)

    You'll have the different combinations.

Source: GeeksforGeeks

Thomas Fritsch
  • 9,639
  • 33
  • 37
  • 49
Simran Koul
  • 11
  • 3
  • That's so informative,but do you have any idea about the source code of permutations function ,i want to know more about it – rakesh Mar 25 '18 at 16:25