数据结构实验之链表三:链表的逆置 (sdut oj)

    xiaoxiao2021-03-25  84

    数据结构实验之链表三:链表的逆置

    Time Limit: 1000MS  Memory Limit: 65536KB

    Problem Description

    输入多个整数,以-1作为结束标志,顺序建立一个带头结点的单链表,之后对该单链表的数据进行逆置,并输出逆置后的单链表数据。

    Input

    输入多个整数,以-1作为结束标志。

    Output

    输出逆置后的单链表数据。

    Example Input

    12 56 4 6 55 15 33 62 -1

    Example Output

    62 33 15 55 6 4 56 12

    Hint

    不得使用数组。

    Author

    参考代码

    #include<stdio.h> #include<stdlib.h> struct node { int data; struct node *next; }; int main() { struct node *head,*p,*tail,*q; head = (struct node *)malloc(sizeof(struct node)); head->next = NULL; tail = head; int n; while(1) { scanf("%d",&n); if( n == -1 ) break; p = (struct node *)malloc(sizeof(struct node)); p->data = n; p->next = tail->next; tail->next = p; tail = p; } p = head->next; q = p->next;; head->next = NULL; while( q != NULL ) { p->next = head->next; head->next = p; p = q; q = q->next; } p->next = head->next; head->next = p; p = head->next; printf("%d",p->data); p = p->next; while(p) { printf(" %d",p->data); p = p->next; } printf("\n"); return 0; }
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