[Programmers] 최빈값 구하기 - most_common, set

https://school.programmers.co.kr/learn/courses/30/lessons/120812?language=python3 

프로그래머스

 

from collections import Counter
def solution(array):
    try :
        data = Counter(array).most_common(2)
        
        if len(array) == 1:
            return array[0]
        else:
            if data[0][1] != data[1][1]:
                return data[0][0]
            else:
                return -1
    except :
        return array[0]

 

from collections import Counter
def solution(array):   
    if len(set(array)) > 1:
        tupl = Counter(array).most_common(2)
        if tupl[0][1] == tupl[1][1]:
            return -1
        else:
            return tupl[0][0]
    else:
        return array[0]

 

 

def solution(array):
    while len(array) != 0:
        for i, a in enumerate(set(array)):
            array.remove(a)
        if i == 0: return a
    return -1