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Inverse1.c
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// #include "stdafx.h"
#include<stdio.h>
#include<stdlib.h>
typedef int ElemType;
typedef int Status;
#define ERROR 0
#define OK 1
typedef struct Node {
ElemType element;
struct Node * link;
}Node;
typedef struct {
struct Node* first;
int n;
}SingleList;
Status Init(SingleList *L);
Status Output(SingleList L);
//void Inverse(SingleList *L, int n);
void Inverse(SingleList *L);
Status Insert(SingleList *L, int i, ElemType x);
// Status Delete(SeqList *L,int i);
// void Destory(SeqList *L);
// �������ʼ��
Status Init(SingleList *L) {
L->first = NULL;
L->n = 0;
return OK;
}
/*
void Inverse(SingleList *L, int n) {
Node *p,*q,*t;
int i,j;
p=L->first;
t=L->first;
for(j=0;j<n-3;j++){
p=p->link;
}
for(j=0;j<n-1;j++){
t=t->link;
}
q=malloc(sizeof(Node));
q->element = t->element;
for(i=n-3;i>=0;i--){
q->link=p->link;
q--;
p->link=t;
p--;
}
}
*/
/*
void Inverse(SingleList *L, int n){
Node *p,*q,*t,*r;
int i,j;
r=L->first; //始终指向第一个结点
p=L->first;
for(i=1;i<n;i++){
t=L->first;
for(j=0;j<i;j++){
t=t->link;
}
q=t;
L->first=q; //first结点
p->link=q->link;
q->link=r;
}
}
*/
/*
void Inverse(SingleList *L, int n){
Node *p,*q,*q1;
p=L->first;
q=p->link;
p->link=NULL;
if(n==1) return 0;
if(n>=2){
while(q->link!=NULL){
q1=q->link;
q->link=p;
p=q;
//p->link=NULL;
q=q1;
}
q->link=p;
L->first=q;
}
}
*/
void Inverse(SingleList *L){
Node *p=L->first,*q;
L->first = NULL;
while(p){
q=p->link;
p->link=L->first;
L->first=p;
p=q;
}
}
Status Insert(SingleList *L, int i, ElemType x) {
Node *p, *q;
int j;
if (i<-1 || i>L->n - 1)
return ERROR;
p = L->first;
for (j = 0; j < i; j++) {
p = p->link;
}
q = malloc(sizeof(Node));
q->element = x;
if (i > -1) {
q->link = p->link;
p->link = q;
}
else {
q->link = L->first;
L->first = q;
}
L->n++;
return OK;
}
// ���������
Status Output(SingleList L) {
Node *p;
if (!L.n)
return ERROR;
p = L.first;
while (p) {
printf("%d ",p->element); //��ǰ����������Ԫ��
p = p->link;
}
return OK;
}
void main()
{
int i, x, nn;
SingleList list;
scanf("%d", &nn);
printf("\n");
Init(&list); // �Ե������ʼ��
for (i = 0; i < nn; i++) {
scanf("%d", &x);
Insert(&list, i - 1, x);
}
Output(list);
// Inverse(&list, nn);
Inverse(&list);
printf("\n");
Output(list);
printf("\n");
}