Here is an interesting interview question on binary search trees and combinatorics. We discuss an elegant approach to the problem, and see why it works.

• 00:00 Intro
• 00:21 Problem Definition
• 02:14 Examples
• 04:04 First observation
• 06:34 Second observation
• 09:38 Illustrations
• 11:42 Solution
• 14:44 Conclusion
• 15:56 Your favorite ad 😛

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