File size: 1,213 Bytes
4559903 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | #include <stdio.h>
#include <stdlib.h>
#include "list.h"
#define N 10
struct list *list_reverse(struct list *head)
{
struct list *rev_head = NULL;
struct list *rev_cur = NULL;
struct list *cur = head;
do
{
rev_cur = (struct list *) malloc( sizeof(struct list) );
rev_cur->n = cur->n;
rev_cur->next = rev_head;
rev_head = rev_cur;
} while( cur = cur->next );
return rev_head;
}
void list_reverse_inplace(struct list **head)
{
struct list *rev;
struct list *cur;
struct list *tmp;
cur = *head;
rev = NULL;
while( cur )
{
tmp = cur->next;
cur->next = rev;
rev = cur;
cur = tmp;
}
*head = rev;
}
int main(int argc, const char *argv[])
{
struct list *head, *rev, *rev2;
head = list_constructor_tail(N);
printf("Original list\n");
list_print(head);
printf("-----------------------------\n");
rev = list_reverse(head);
printf("Reverted list\n");
list_print(rev);
list_print(head);
printf("-----------------------------\n");
list_reverse_inplace(&head);
printf("Inplace Reverted list\n");
list_print(head);
return 0;
}
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