Allowed Letters Only
Sometimes you need to filter words that use only approved characters, such as in a simple dictionary or input check. Given a string allowed with the permitted characters and a list of strings words, count how many words contain only characters from allowed. Return that count.
Примеры
Ввод
"ab", ["ad", "bd", "aaab", "baa", "badab"]Вывод
2Ввод
"abc", ["a", "b", "c", "ab", "ac", "bc", "abc"]Вывод
7Ввод
"cad", ["cc", "acd", "b", "ba", "bac", "bad", "ac", "d"]Вывод
4Нужно реализовать
def count_consistent_strings(allowed: str, words: list[str]) -> int:
Теги
stringssethashmap
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ΣύνδεσηVisible tests
1
Input
"ab", ["ad","bd","aaab","baa","badab"]Expected
22
Input
"abc", ["a","b","c","ab","ac","bc","abc"]Expected
73
Input
"cad", ["cc","acd","b","ba","bac","bad","ac","d"]Expected
44
Input
"a", ["a","aa","aaa"]Expected
35
Input
"z", ["a","b"]Expected
06
Input
"ab", ["AD","BD","AAAB","BAA","BADAB"]Expected
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