Code of Life: What does sorting books have to do with code

A cleaner was recently in the news for sorting books in size order after giving the library a deep clean. Was this a mistake? Come and learn how it relates to code and watch me sort some books. Hint sorting algorithms.

Source:
Coronavirus: Library books rearranged in size order by cleaner published on April 24 on bbc uk website.
https://www.bbc.co.uk/news/uk-england-suffolk-52412655