题解 | #删除链表峰值#

/**
 * struct ListNode {
 *	int val;
 *	struct ListNode *next;
 * };
 */
/**
 * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
 *
 * 
 * @param head ListNode类 
 * @return ListNode类
 */
#include <stdlib.h>
struct ListNode* deleteNodes(struct ListNode* head ) {
    // write code here
    if (head == NULL || head->next == NULL) {
        return head;
    }
    struct ListNode* pre = head;
    struct ListNode* cur = head->next;

    while (cur->next) {
        if (cur->val > pre->val && cur->val > cur->next->val) {
            pre->next = cur->next;
            cur = cur->next;
        } else {
            pre = cur;
            cur = cur->next;
        }
    }
    return head;
}