Create bst_insertion_pre_order.rb #2
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based on Challenge You will be given an array of numbers as input. Insert the numbers (in order) one-at-a-time into a binary search tree. Then return a string with the tree in pre-order.
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based on
Challenge
You will be given an array of numbers as input. Insert the numbers (in order) one-at-a-time into a binary search tree. Then return a string with the tree in pre-order.