[프로그래머스/Programmers] 튜플 - Python

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코딩테스트 연습 - 튜플

 

Solution

def solution(s):
    answer = []

    s = s.lstrip('{').rstrip('}').split('},{')

    t = []
    for i in range(len(s)):
        t.append(s[i].split(','))

    d = {}
    for i in range(len(t)):
        for j in range(len(t[i])):
            if t[i][j] in list(d.keys()):
                d[t[i][j]] += 1
            else:
                d[t[i][j]] = 1

    d = sorted(d.items(), key=lambda x: x[1], reverse=True)

    for i in range(len(d)):
        answer.append(int(d[i][0]))

    return answer

🔑 key point: s에서 같은 숫자가 중복된 횟수가 많은 순으로 반환
📌 Tip: lstrip(), rstrip()

 

Other Solution

def solution(s):
    answer = []

    s = s.lstrip('{').rstrip('}').split('},{')

    t = []
    for i in s:
        t.append(i.split(','))


    t.sort(key=len)

    for i in t:
        for j in range(len(i)):
            if int(i[j]) not in answer:
                answer.append(int(i[j]))

    return answer

🔑 key point: s에 들어있는 집합을 길이 순으로 정렬하여 새로운 값 순으로 반환
📌 Tip: lstrip(), rstrip()

from collections import Counter

def solution(s):
    answer = []

    s = Counter(s)
    s = sorted(s.items(), key=lambda x: x[1], reverse=True)

    for i in s:
        if i[0].isdigit() == True:
            answer.append(int(i[0]))

    return answer

🔑 key point: s에서 같은 숫자가 중복된 횟수가 많은 순으로 반환
📌 Tip: Counter(), isdigit()