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  • Data Structure Quiz 15
  • If the keys '1, 2, 3, 4 and 5' are inserted in order into...
Multiple choice

If the keys '1, 2, 3, 4 and 5' are inserted in order into initially empty a AVL tree, the total number of rotations required to balance the tree, is

  1. 1

  2. 2

  3. 3

  4. 4

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Inserting 1, 2, 3 requires one left rotation at 1. Inserting 4, 5 requires one left rotation at 3. Total rotations: 2.

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