题目
给你一个由不同字符组成的字符串 allowed
和一个字符串数组 words
。
如果一个字符串的每一个字符都在 allowed
中,就称这个字符串是 一致字符串。
请你返回 words
数组中 一致字符串 的数目。
示例1:
1 | 输入:allowed = "ab", words = ["ad","bd","aaab","baa","badab"] |
示例2:
1 | 输入:allowed = "abc", words = ["a","b","c","ab","ac","bc","abc"] |
示例3:
1 | 输入:allowed = "cad", words = ["cc","acd","b","ba","bac","bad","ac","d"] |
提示:
1 <= words.length <= 104
1 <= allowed.length <= 26
1 <= words[i].length <= 10
allowed
中的字符 互不相同 。words[i]
和allowed
只包含小写英文字母。
解法
解法一:
Java
1 | public int countConsistentStrings(String allowed, String[] words) { |