Java PriorityQueue比较器

Question

Say I've implemented a HashMap in which characters get assigned an ArrayList of values.

I've created a PriorityQueue of those characters in the HashMap, but I'd like to be able to remove the characters according to this priority:

{a, b, c} <- initial queue

{a, b} Remove c since it contains a value in its ArrayList which determines it must be removed first.

What would be the best way to go about this?

Answer 1

您将需要将键和值组合到单个对象中，并使用对这些新对象起作用的比较器。