6. (10 marks) Consider that nodes with the following keys are inserted, in the order as shown, into an initially empty AVL tree. 50, 30, 60, 20, 10,25, 70,90, 85, 80 Show clearly the whole AVL tree after each of the nodes is inserted. (Note: there are 10 AVL trees that you need to show as there are 10 nodes that are inserted. You may show the intermediate results, but this is not necessary.) 7.
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