Catalan Numbers

September 12, 2017

Today’s exercise is an Amazon interview question for software engineers and developers:

How many unique binary search trees can be made from a series of numbers 1, 2, 3, 4, …, n, for any given n?

Your task is to compute the number of unique binary search trees. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.


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