Wrong answer java doubt

#1

if frequency of 2 strings is same, priority queue should give output in alphabetical order, but it is not giving. I have used the same comparator as used in previous problem. Please check.

#2

see this


commented errors

#3

I stored the elements in queue from highest to lowest. You stored from lowest to highest and reversed it. Please tell the mistake in my approach

#4

also pls explain why order is y,x