#     def __init__(self, x):
#         self.val = x
#         self.next = None
#
# 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 
# @param val int整型 
# @return ListNode类
#
class Solution:
    def deleteNode(self , head: ListNode, val: int) -> ListNode:
        # write code here
        pre = ListNode(-1)
        ppre = ListNode(-1)
        ppre.next = pre
        while head:
            if head.val != val:
                pass
            else:
                head = head.next
            pre.next = head
            head = head.next
            pre = pre.next
        return ppre.next.next

本题较为简单，只需要遍历每个节点的val，看其是否等于给定的val即可。