Leetcode Golang 19. Remove Nth Node From End of List.go

func removeNthFromEnd(head *ListNode, n int) *ListNode {
   cur := head
   last := head
   for i := 0; i < n; i++ {
   	if cur.Next != nil {
   		cur = cur.Next
   	} else {
   		return head.Next
   	}
   }
   for cur.Next != nil {
   	cur = cur.Next
   	last = last.Next
   }
   last.Next = last.Next.Next
   return head
}