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Iam_Sandeep

Reverse a doubly linked list

Iam_Sandeep
Apr 4th, 2022 (edited)
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  1.  
  2. def reverseDLL(head):
  3.     pre,cur=None,head
  4.     while cur:
  5.         cur.next,cur.prev,pre,cur=pre,cur.next,cur,cur.next
  6.     return pre
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