[프로그래머스] 실패율 - 파이썬(Python)

[프로그래머스] 실패율 - 파이썬(Python)

 

 

 

import collections


def solution(N, stages):
    total_people = len(stages)
    stage_count = dict(collections.Counter(stages))
    result = []
    for i in range(1, N + 1):
        if i in stage_count.keys():
            result.append((i, stage_count[i] / total_people))
            total_people -= stage_count[i]
        else:
            result.append((i, 0))
    result.sort(key=lambda x: (-x[1], x[0]))
    return [x for x, _ in result]

 

 

 

 

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

코딩테스트 연습 - 실패율