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Segnicho
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Feb 21, 2023
| def removeNthFromEnd(self, head: Optional[ListNode], n: int) -> Optional[ListNode]: | ||
| dummy = ListNode() | ||
| dummy.next = head | ||
| ptr_d = dummy |
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you should use clearer variable names
| while ptr_h: | ||
| ptr_d = ptr_d.next | ||
| ptr_h = ptr_h.next | ||
| ptr_d.next = ptr_d.next.next |
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here you could check for a null pointer
if ptr_d.next: ptr_d.next = ptr_d.next.next
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this is my solution