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单链表反转(C代码)

将一个单向链表反转,也就是将1->2->3->4->...->n-1->n这样的链表反转变为n->n-1->...3->2->1,可以这样做,顺序删除链表中的节点,使链表的next指针指向前一个元素,切断与后面元素的联系。这样算法的复杂度是O(N),只需要N次遍历就可以将链表反转,代码如下:


[cpp]
#include <stdio.h>  
#include <stdlib.h>  
typedef struct Node* LinkList; 
 
struct Node{ 
        struct Node* next; 
        int data; 
}Node; 
 
 
 
void list(int arr[],LinkList l,int n){ 
        int i; 
        LinkList p = l, s; 
        for(i = 0; i < n; i++){ 
                s = (LinkList)malloc(sizeof(Node)); 
                s->data = arr[i]; 
                p->next = s; 
                p = s; 
        } 
        p->next = NULL; 

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

void reverse(LinkList l){ 
        LinkList p = l->next; 
        LinkList s = NULL, q = NULL; 
        while(p != NULL){ 
                s = p->next; 
                p->next = q; 
                q = p; 
                p = s; 
        } 
        LinkList h = (LinkList)malloc(sizeof(Node)); 
        h->next = q; 
        traverse(h); 

 
int main(int argc, char * argv[]){ 
        int arr[10] = {1,2,3,4,5,6,7,8,9,10}; 
        LinkList head = (LinkList)malloc(sizeof(Node)); 
        list(arr, head, 10); 
        traverse(head); 
        reverse(head); 

补充:软件开发 , C++ ,
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