checkio home theMostWantedLetter
checkio home theMostWantedLetter
from collections import Counter import re def checkio(text): #1.文字列操作(データ加工) str = text.lower() #大文字から小文字 str2 = str.replace(" ", "") #空白を削除 str3 = re.sub(r'[!-/:-@[-`{-~]', "", str2) #ASCII記号を削除 str4 = re.sub(r'[0-9]', "", str3) #数字を削除 #2.各文字数をカウント mwl = Counter(str4) #3.文字数が最大のアルファベットのみ格納 list = [] cnt = 0 for key,value in mwl.most_common(): if cnt <= value: list.append(key) cnt = value else: break print(list) #4.アルファベット順にソート list.sort() return list[0] #Lorem ipsum dolor sit amet if __name__ == '__main__': #These "asserts" using only for self-checking and not necessary for auto-testing assert checkio("Hello World!") == "l", "Hello test" assert checkio("How do you do?") == "o", "O is most wanted" assert checkio("One") == "e", "All letter only once." assert checkio("Oops!") == "o", "Don't forget about lower case." assert checkio("AAaooo!!!!") == "a", "Only letters." assert checkio("abe") == "a", "The First." print("Start the long test") assert checkio("a" * 9000 + "b" * 1000) == "a", "Long." print("The local tests are done.")
・collections>Counter