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All topics›JavaScript›Linked lists

Remove Duplicates from Sorted List

beginnerlayer B9 · Linked lists5 tests

The list is sorted in non-decreasing order. Delete the repeats so that every value appears exactly once, and return the head.

  • Keep the first occurrence of each value
  • Because the list is sorted, duplicates are always adjacent
  • Modify the list in place — no new nodes

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