Question: De ne the rotational distance R(T1, T2) between two n-node binary trees T1 and T2 to be the minimum number of rotations needed to convert

De ne the rotational distance R(T1, T2) between two n-node binary trees T1 and T2 to be the minimum number of rotations needed to convert T1 to T2. Show that R(T1, T2) 2n.

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