Method Push

utils/pqueue.go:33–35

Push and Pop use pointer receivers because they modify the slice's length, not just its contents. Push add a value to the tail of the priority queue

(x interface{})

// Push add a value to the tail of the priority queue
func (pq *PQueue) Push(x interface{}) {
	*pq = append(*pq, x.(PQueueNode))
}

// Pop removes a value from the head of the priority queue
func (pq *PQueue) Pop() interface{} {