lst-0119-godb.cpp
//#(compile) c++; compiler:g132; options:-O3 -std=c++23; libs:-
// https://godbolt.org/z/a8cGxr9s9
#include <unordered_set> // unordered_multiset
#include <iostream>
#include <string>
using std::unordered_multiset; using std::cout; using std::string;
int main() {
const string in = "She sells sea shells by the seashore.";
unordered_multiset<int> cs(in.begin(), in.end()); // string as container
cout << cs.count( 's' ) << " times s\n"; // Output: 7 times s
}