modify game Boolean -> ternary structure-shy programming Make the program look like the design Design ONE program that computes the height of a tree for the following tree structures: Tree 3: with null Tree = Node [ Tree] [ Tree] [ Tree]. Tree 3: without null Tree : Empty | Node. Node = Tree Tree Tree. Tree 3: without null Tree : Empty | Node. Node = N1 N2 N3. N1 = Tree. N2 = Tree. N3 = Tree. Tree 2: without null Tree : Empty | Node. Node = N1 N2. N1 = Tree. N2 = Tree.