python实现leetcode之83. 删除排序链表中的重复元

解题思路

看到重复的跳一步
仅此而已

83. 删除排序链表中的重复元素

代码

# Definition for singly-linked list.
# class ListNode(object):
#     def __init__(self, x):
#         self.val = x
#         self.next = None

class Solution(object):
    def deleteDuplicates(self, head):
        """
        :type head: ListNode
        :rtype: ListNode
        """
        node = head
        while node and node.next:
            if node.val == node.next.val:
                node.next = node.next.next  # 删掉重复的
            else:
                node = node.next
        return head