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 "string"
#include <set>
using namespace std;
int main() {
string str_s;
getline(cin, str_s);
set<char> setNum;
for (auto it = str_s.begin(); it != str_s.end(); ++it) {
setNum.insert(*it);
}
cout << setNum.size();
}
// 64 位输出请用 printf("%lld")
