see how many times is an element repeated c++ code example
Example: how to find a integer is how many times repeated in C++ without for loop
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main(void) {
vector<int> v = {1, 3, 3, 3, 3};
int cnt;
cnt = count(v.begin(), v.end(), 3);
cout << "Number 3 occurs " << cnt << " times." << endl;
return 0;
}