# 19. Remove Nth Node From End of List ###### tags: `LeetCode筆記` `鏈結串列` ## 思路: 1. 知道linked list 的travel 2. 知道邊際值問題 3. leetcode 的head 不用用self.head ```python= num=0 current=head while current : num+=1 current=current.next position= num-n current_2=head count=1 if position==0 : return head.next while current_2: if count==position: current_2.next=current_2.next.next current_2=current_2.next count+=1 return head ```