Open carloscn opened 1 year ago
fn is_allowed(allowed:&str, word:&str) -> bool
{
let mut wv:Vec<char> = word.chars().collect();
let mut e:char;
wv.sort();
e = wv[0];
if wv.len() == 1 {
return allowed.contains(e);
}
for i in 1..word.len() {
if e == wv[i] {
continue;
} else {
if allowed.contains(wv[i]) {
e = wv[i];
} else {
return false;
}
}
}
return true;
}
pub fn count_consistent_strings(allowed: &str, words: Vec<&str>) -> i32
{
if allowed.len() < 1 || words.len() < 1 {
return 0;
}
let mut ret:i32 = 0;
for e in words {
if is_allowed(&allowed, e) {
ret += 1;
}
}
return ret;
}
问题描述
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。
来源:力扣(LeetCode) 链接:https://leetcode.cn/problems/count-the-number-of-consistent-strings