This question is not the same as -- but has a similar feel to -- the first programming problem in the classic book "Programming Pearls"[1]. You can read it on O

This question is not the same as -- but has a similar feel to -- the first programming problem in the classic book "Programming Pearls"[1]. You can read it on O'Reilly Safari these days[2]. Even if you don't read the book, that first chapter, "Cracking the Oyster", is worth a read. It's a fun problem. [1]: https://amzn.to/2vWkZ0D https://amzn.to/2vWkZ0D [2]: https://learning.oreilly.com/library/view/programming-pearls-second/9780134498058/ch01.html https://learning.oreilly.com/library/view/programming-pearls...