[python 알고리즘] itertools를 이용하여 순열, 조합 구현

https://juhee-maeng.tistory.com/91?category=922562 

(Python) 순열, 조합, 중복순열, 중복조합 쉽게 구현하기

순열

from itertools import permutations

for i in permutations([1,2,3,4], 2):
    print(i, end=" ")

(1, 2) (1, 3) (1, 4) (2, 1) (2, 3) (2, 4) (3, 1) (3, 2) (3, 4) (4, 1) (4, 2) (4, 3)

조합

from itertools import combinations

for i in combinations([1,2,3,4], 2):
    print(i, end=" ")

(1, 2) (1, 3) (1, 4) (2, 3) (2, 4) (3, 4)