LeetCode 2185. Counting Words With a Given Prefix
🔗 https://leetcode.com/problems/counting-words-with-a-given-prefix
题目
- 给一个字符串数组，返回其中前缀为 pref 的个数
思路
- 模拟
代码
class Solution {
public:
int prefixCount(vector<string>& words, string pref) {
int count = 0;
for (int i = 0; i < words.size(); i++) {
bool mark = true;
for (int j = 0; j < pref.size(); j++) {
if (pref[j] != words[i][j]) {
mark = false;
break;
}
}
if (mark) count++;
}
return count;
}
};