HJ10题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
int main() {
string input;
getline(cin, input);
vector<char> vec;
for (int i = 0; i < input.size(); i++) {
if (find(vec.begin(), vec.end(), input[i]) == vec.end()) {
vec.push_back(input[i]);
}
}
cout << vec.size();
}
#刷题#
