priorityqueue

type LessFunc[T any] func(lhs, rhs T) bool

type PriorityQueue[T any] interface {
	// Size gets number of element in a queue.
	Size() int
	// Insert adds element to a queue.
	Insert(element T)
	// Remove removes element from a queue.
	Remove() T
	// Peek returns first element of a queue.
	Peek() T
}