题解 | #删除有序链表中重复的元素-I#

# class ListNode:
#     def __init__(self, x):
#         self.val = x
#         self.next = None

#
# 
# @param head ListNode类 
# @return ListNode类
#
class Solution:
    def deleteDuplicates(self , head ):
        # write code here
        if not head or not head.next:
            return head
        temp = head
        while temp and temp.next:
            if temp.next.val == temp.val:
                temp.next = temp.next.next
            else:
                temp = temp.next
        return head