IS THIS PROBLEM DESIGNED specifically FOR STACKS?

#1

I solved the problem by arrays.


Its is under stack section so please guide me through using stacks?

#2

@mohit_99 hey mohit our motto is basically to teach you the variation about the question if this problem are in stack section so you should try with it stacks.
so how this problem solve using stacks.
first take a input array
and a stack< int > s;
push the first index of array into the stack like s.push(a[0]);
apply loop from i=1 to n
now apply a while loop
while(!s.empty()&&s.top()<a[ i ])
{
cout<<a[ i ]<<" “;
now pop the current element from the stack reason for that we want to check for next element
s.pop();
}
push the next element of the array according to loop
s.push( a[ i ] );
while(! s.empty() )
{
cout<<-1<<” ";
s.pop();
}

#3

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