CodeChef Starters 30 Division 4 (Rated) Balanced Reversals Problem Code: BALREV Solution

Problem Link:  https://www.codechef.com/problems/BALREV 

 Solution in C++:

///La ilaha illellahu muhammadur rasulullah

///******Bismillahir-Rahmanir-Rahim******///

///Abul Hasnat  Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh

#include <bits/stdc++.h>

using namespace std;

int main()

{

    int t,n,i,o,z;

    cin>>t;

    while(t--)

    {

        o=z=0;

        cin>>n;

        string str;

        cin>>str;

        for(i=0;i<str.size(); i++)

        {

            if(str[i]=='1')

                o++;

            else

                z++;

        }

        for(i=0;i<z;i++)

        cout<<"0";

        for(i=0;i<o;i++)

        cout<<"1";

        cout<<endl;

    }

}