#include<bits/stdc++.h>
using namespace std;
int main() {
int t;
cin>>t;
while(t–){
int size;
cin>>size;
vectorvec;
for(int i=0;i<size;i++){
string str;
cin>>str;
vec.push_back(str);
}
sort(vec.begin(),vec.end(),greater());
for(int i=0;i<vec.size();i++){
cout<<vec[i];
}
cout<<endl;
}
return 0;
}
hi @anonymouslevone_98393e5729c3116b,
consider nos are 100 and 10
you will sort and print 10010 but ans is 10100
so check which is greater either 10 + 100 or 100 + 10 then return from custom comparator
here’s the updated code : https://ide.codingblocks.com/s/661893
what are the arguments of the compartor?
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