Question: Argue that in every n-node binary search tree, there are exactly n - 1 possible rotations. Figure 13.3 An example of how the procedure LEFT-ROTATE

Argue that in every n-node binary search tree, there are exactly n - 1 possible rotations.

7 11x 3 6 18 14 19 LEFT-ROTATE(T, x) 12 17 22

Figure 13.3 An example of how the procedure LEFT-ROTATE (T, x) modifies a binary search tree. In order tree walks of the input tree and the modified tree produce the same listing of key values.

7 11x 3 6 18 14 19 LEFT-ROTATE(T, x) 12 17 22 20 7 18 6. x(11 19 9. 14 22 12 17 20 3. 2. 2.

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