Can anyone suggest me a good algorithm to make football fixture taking the number of teams as an input

Question

It should be able to take input of number of teams
then the teams will be each of the numbers between one and the provided number of teams
and it should generate the fixture without repeating the numbers(teams)
use any language

Answer 1

https://code.sololearn.com/cNczZQuELCY5/?ref=app

Answer 2

In Python you can call list(permutations (list_of_teams, 2))
albeit this one takes list of the teams instead of the number of teams. Hope it helps