题解 | #反转链表#

/**
 * struct ListNode {
 *	int val;
 *	struct ListNode *next;
 * };
 */

/**
 * 
 * @param pHead ListNode类 
 * @return ListNode类
 */
struct ListNode* ReverseList(struct ListNode* pHead ) {
    // write code here
    struct ListNode* cur=NULL;
    struct ListNode*pre;
    struct ListNode *tmp;
    pre=pHead;
    while(pre)
    {
        tmp=pre->next;
        pre->next=cur;
        cur=pre;
        pre=tmp;
    }
    return cur;
}