[카카오]실패율

[문제]

https://school.programmers.co.kr/learn/courses/30/lessons/42889

프로그래머스

 

[생각거리]

분모가 0일 경우!

 

[코드]

def solution(N, stages):
    count = [0] * (N+1)
    for i in stages:
        count[i-1] += 1
    
    answer = []
    for i in range(0,N):
        if sum(count[i:])!=0:
            value = count[i]/sum(count[i:])
        else: value = 0
        answer.append((-(i+1),value))
        
    answer = sorted(answer, key=lambda x:(x[1], x[0]), reverse=True)

    answer = [-i[0] for i in answer]
    return answer