数据结构问题...

Question

将一个结点类型LNODE的单链表按逆序链接，即若原单链表中存储元素的次序为a1，a2，...an-1，an则逆序链接后变为an，an-1，...，a2，a1.编写算法实现，并在main（）函数中进行调用验证

Answer 1

#include <stdio.h>
#include <stdlib.h>

typedef struct node
{
int data;
struct node *next;
}LinkNode, *LinkList;

LinkList Creat(LinkList head);
void Inverse(LinkList head);
void Output(LinkList head);

LinkList Creat(LinkList head)//建表
{
LinkList p = NULL;
LinkList q = NULL;

head = (LinkList) malloc (sizeof(LinkNode));
head->next = NULL;

q = head;

while (1)
{
p = (LinkList) malloc (sizeof(LinkNode));
p->next = NULL;

scanf("%d", &p->data);
if (0 == p->data)//输入0表示结束输入
{
free(p);
break;
}

q->next = p;
q = p;
}

return head;
}

void Inverse(LinkList head)//逆置
{
LinkList p = head->next;
LinkList tmp = NULL;

head->next = NULL;

while (NULL != p)
{
tmp = p->next;
p->next = head->next;
head->next = p;
p = tmp;
}
}

void Output(LinkList head)//输出
{
LinkList p = head->next;

while (NULL != p)
{
printf("%d ", p->data);
p = p->next;
}
printf("\n");
}

int main(void)
{
LinkList head = NULL;

head = Creat(head);
Output(head);

Inverse(head);
Output(head);

return 0;
}