As a professional developer, if I am faced with the task of dealing with binary trees at work, I would never: - implement my own binary tree - implement my ow

As a professional developer, if I am faced with the task of dealing with binary trees at work, I would never: - implement my own binary tree - implement my own "invert a binary tree" algorithm Reasons: - my own implementation would be way worse than any other open source implementation (which has been reviewed extensively) in terms of: performance, number of bugs, correctness - it would be a hell to maintain for future developers that have to maintain my code - it just makes sense. Well understood algorithms do not require re-implementation