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All topics›JavaScript›Linked lists

Palindrome Linked List

advancedlayer B9 · Linked lists5 tests

Decide whether the values in a singly linked list read the same forwards and backwards. Return true or false.

  • Use O(1) extra space — copying the values into an array is the answer we are not looking for
  • Runs in O(n) time
  • The empty list and any single node list are palindromes

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