#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include "list.h"

ELEM * insert_element_at_back(HEAD * lst,ELEM * entry) {
    insertLast(lst,entry); // Aufruf der ents. Listenfunktion
    return lst;
}

ELEM * remove_element_at_back(HEAD * lst) {
    removeBack(lst);    // Aufruf der ents. Listenfunktion
    return lst;
}

ELEM * insert_element_at_front(HEAD * lst,ELEM * entry) {
    insertFirst(lst,entry); // Aufruf der ents. Listenfunktion
    return lst;
}

ELEM * remove_element_at_front(HEAD * lst) {
    deleteFirst(lst);
    return lst;
}

void * examine_first_element(HEAD * lst) {
    printFirst(lst);
}

void * examine_last_element(HEAD * lst) {
    printLast(lst);
}

int emptyDeqeue(HEAD * lst) {
    if(lst->len == 0) return 0;
    return 1;
}

ELEM * deleteDeqeue(HEAD * lst) {
    rm_Slist(lst);
    return lst;
}