how compress string in c
#include <bits/stdc++.h>
using namespace std;
class Solution {
public:
string solve(string s) {
string ret = "";
for(int i = 0; i < s.size(); i++){
if(ret.size() && ret.back() == s[i]){
continue;
}
ret += s[i];
}
return ret;
}
};
int main(){
Solution ob;
cout << (ob.solve("heeeeelllllllloooooo"));
}