#include <stdio.h>
#include <malloc.h>
#define N 10
typedef struct Node
{
int data;
struct Node *next;
}Node, *LinkedList;
void initList(LinkedList *L);
int ListInsert(LinkedList *L, int index, int e);
int ListDelete(LinkedList *L, int index, int *e);
void printList(LinkedList L);
int main(int argc, char const *argv[])
{
int e;
LinkedList L=NULL;
initList(&L);
for (int i = 1; i <= N; ++i)
{
ListInsert(&L,i,i);
}
printList(L);
for (int i = L->data; i >=1; --i)
{
ListDelete(&L,i,&e);
printf("%d ", e);
}
return 0;
}
void initList(LinkedList *L)
{
(*L) = (Node*)malloc(sizeof(Node));
(*L)->data = 0;
(*L)->next = NULL;
}
int ListInsert(LinkedList *L, int index, int e)
{
if(index>(*L)->data+1 || index<=0) return -1;
int i = 0;
Node *p = (*L);
while(p)
{
if(i==index-1)
{
Node *t = (Node*)malloc(sizeof(Node));
t->data = e;
t->next = p->next;
p->next = t;
(*L)->data += 1;
return 0;
}
++i;
p = p->next;
}
}
int ListDelete(LinkedList *L, int index, int *e)
{
if(index<=0 || index>=(*L)->data+1) return -1;
int i=0;
Node* p = (*L);
while(p)
{
if(i==index-1)
{
Node *q = p->next;
p->next = q->next;
*e = q->data;
free(q);
q = NULL;
return 0;
}
++i;
p = p->next;
}
}
void printList(LinkedList L)
{
Node *p = L;
while(p->next)
{
p = p->next;
printf("%d ",p->data);
}
}