#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "priority_queue.h"


Node* pq_enqueue(Node** a_head, void* a_value, int (*cmp_fn)(void const*, void const*)) {
    return NULL;  // STUB -- remove this line when filling in the body of pq_enqueue(…).
}


Node* pq_dequeue(Node** a_head) {
    return NULL;  // STUB -- remove this line when filling in the body of pq_dequeue(…).
}


Node* stack_push(Node** a_head, void* a_value) {
    return NULL;  // STUB -- remove this line when filling in the body of stack_push(…).
}


Node* stack_pop(Node** a_head) {
    return NULL;  // STUB -- remove this line when filling in the body of stack_pop(…).
}


void destroy_list(Node** a_head, void (*destroy_value_fn)(void*)) {

}


#define HUFFMAN_C_V1