class Solution {
public:
int countConsistentStrings(string allowed, vector<string>& words) {
}
};
1684. 统计一致字符串的数目
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:
输入:allowed = "ab", words = ["ad","bd","aaab","baa","badab"] 输出:2 解释:字符串 "aaab" 和 "baa" 都是一致字符串,因为它们只包含字符 'a' 和 'b' 。
示例 2:
输入:allowed = "abc", words = ["a","b","c","ab","ac","bc","abc"] 输出:7 解释:所有字符串都是一致的。
示例 3:
输入:allowed = "cad", words = ["cc","acd","b","ba","bac","bad","ac","d"] 输出:4 解释:字符串 "cc","acd","ac" 和 "d" 是一致字符串。
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。原站题解
golang 解法, 执行用时: 164 ms, 内存消耗: 7.1 MB, 提交时间: 2021-06-04 17:31:42
func countConsistentStrings(allowed string, words []string) int { ans := 0 pat, _ := regexp.Compile(strings.Join(strings.Split(allowed, ""), "|")) for _, word := range words { if pat.ReplaceAllString(word, "") == "" { ans++ } } return ans }