๋ณธ๋ฌธ ๋ฐ”๋กœ๊ฐ€๊ธฐ

counter

(2)
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๋ฌธ์ž์—ด ๋‚ด p์™€ y์˜ ๊ฐœ์ˆ˜ ๋ฌธ์ž์—ด ์•ˆ์— ์žˆ๋Š” p์™€ y์˜ ๊ฐœ์ˆ˜๋ฅผ ๋น„๊ตํ•˜๋Š” ๋ฌธ์ œ์ด๋‹ค. def solution(s): from collections import Counter a = Counter(s) if a['y']+a['Y'] == a['p']+a['P']: return True else: return False counter์„ ์‚ฌ์šฉํ•˜์—ฌ ํ’€์—ˆ๋‹ค! ๊ณต๋ถ€ํ•œ๊ฑธ ์จ๋จน์ž ใ…Žใ…Ž!! ๋‹ค๋ฅธ์‚ฌ๋žŒ ์ฝ”๋“œ def numPY(s): # ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•˜์„ธ์š” return s.lower().count('p') == s.lower().count('y') Counter๋กœ ํ‘ผ ์‚ฌ๋žŒ๋“ค๋„ ๋งŽ์•˜๋Š”๋ฐ ,, ์ด๋ถ„์€ count๋กœ ํ‘ธ์…จ๋‹ค. lower์€ ์žˆ์—ˆ๋˜๊ฑธ ์™„์ „ ๊นŒ๋จน๊ณ ์žˆ๋˜ ํ•จ์ˆ˜๋‹คใ… ใ…  ๊ธฐ์–ตํ•˜์ž!! 1. s.count() 2. s.lower()
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ์œ„์žฅ ใ… ใ…  ๋”•์…”๋„ˆ๋ฆฌ๊นŒ์ง€ ๋งŒ๋“ค์—ˆ๋Š”๋ฐ ๊ณ„์‚ฐ์„ ์–ด๋–ป๊ฒŒ ํ• ๊ฑด์ง€ ๊ณ ๋ฏผํ•˜๋‹ค๊ฐ€.. ๋ธ”๋กœ๊ทธ๋ดค๋‹ค ใ…Ž.. ๋ธ”๋กœ๊ทธ์—์„œ ๊ณ„์‚ฐ ๋ฐฉ๋ฒ•๋งŒ ๋ณด๊ณ  ์ฝ”๋“œ๋Š” ๋‚ด๊ฐ€ ์งœ๋ดค๋‹ค!ใ…  ์„ค๋ช…์€ ์ฝ”๋“œ ์•ˆ์— ๋“ค์–ด๊ฐ€์žˆ๋‹ค. ๋‚ด ์ฝ”๋“œ def solution(clothes): dic = {} sol=1 #์ข…๋ฅ˜๋ฅผ key, ์ˆ˜๋ฅผ value๋กœ ๋”•์…”๋„ˆ๋ฆฌ๋ฅผ ๋งŒ๋“ค์–ด์ค€๋‹ค. for key in clothes: if key[1] in dic: dic[key[1]]+=1 else: dic[key[1]] = 1 # ๊ฐ ์ข…๋ฅ˜๋ณ„๋กœ ์ž…๋Š” ๊ฒฝ์šฐ์˜ ์ˆ˜๋ฅผ ๊ณฑํ•ด์ค€๋‹ค. ๋งˆ์ง€๋ง‰์— ์ „๋ถ€ ์ž…์ง€ ์•Š๋Š” ๊ฒฝ์šฐ์˜ ์ˆ˜๋ฅผ ๋นผ์ค€๋‹ค. for key in dic: sol*=dic[key]+1 return sol-1 ๋‹ค๋ฅธ์‚ฌ๋žŒ ์ฝ”๋“œ def solution(clothes): from collections import Coun..