Remove Linked List Elements
Created: September 18, 2018 by [lek-tin]
Last updated: September 18, 2018
Remove all elements from a linked list of integers that have value val.
Example
Input: 1->2->6->3->4->5->6, val = 6
Output: 1->2->3->4->5
Solution
# Definition for singly-linked list.
# class ListNode:
# def __init__(self, x):
# self.val = x
# self.next = None
class Solution:
def removeElements(self, head, val):
"""
:type head: ListNode
:type val: int
:rtype: ListNode
"""
pre = ListNode(0)
pre.next = head
pos = pre
while pos.next != None:
if pos.next.val == val:
pos.next = pos.next.next
else:
pos = pos.next
return pre.next