Whats wrong in the code

#1
#2

@malhotranaman83,
The error is that since Pair is inside the Main class. We will first create a Main class object and from that object refer to the Pair class.
Something like this should work:

			Main y = new Main();

			Pair z = y.new Pair(x, mp.get(x));
			
			heap.add(z);

Also, make comparator static.

Also, I have explained the sample test case below:

you don’t have to fill the HashMap completely you have to process as the new number is read. then you have to print the top k numbers.
for this sample input:
1
5 2
5 1 3 5 2

first input 5:
freq 5->1
output: 5

second input 1:
freq 5->1
1->1
now both have the same you freq you have to print in inc order of their value.
output: 5 1 5

third input 3
freq 5->1
1->1
3->1
all have the same freq you have to print in inc order of their value.
output: 5 1 5 1 3

fourth input 5:
freq 5->2
1->1
3->1
top k element are 5 and 1
output: 5 1 5 1 3 5 1

fifth input 2:
freq 5->2
1->1
3->1
2->1
top k elements are 5 and 1
final output:5 1 5 1 3 5 1 5 1

I hope you understand it. if you have any doubt feel free to ask: :grinning:

#3

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