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All topics›JavaScript›Linked lists

Intersection of Two Linked Lists

intermediatelayer B9 · Linked lists5 tests

Two singly linked lists may merge and share a common tail. Return the first node they share, or null if they never meet.

  • Sharing means the same node object, not merely equal values
  • The lists may have different lengths
  • Do not modify either list; aim for O(1) extra space

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