[프로그래머스] 삼총사 - 파이썬

Programmers

삼총사

https://school.programmers.co.kr/learn/courses/30/lessons/131705

프로그래머스

문제

코드

• for문을 활용한 풀이

def solution(number):
    answer = 0
    for i in range(len(number)):
        for j in range(i+1, len(number)):
            for k in range(j+1, len(number)):
                if number[i] + number[j] + number[k] == 0:
                    answer += 1
    return answer

 

• combinations 함수 활용. 조합

from itertools import combinations

def solution (number) :
    answer = 0
    for i in combinations(number,3) :
        if sum(i) == 0 :
            answer += 1
    return answer