Radix sort is older than the computer yet quicker than quick sort. Why aren’t we all using it? Check out for advice on how to choose an impactful career. 100k subscribers celebration livestream!! It will start 2 September 2025, 19:00 CEST. We’ll do a Q&A, an algorithm tier list, and small coding games where you can join in. Save the date! Patreon: Blog post: Code: Corrections 09:40 the right punch card is here: Machines from technikum29 IBM O83 sorter: Player piano: Credits Richard Hladík: Script editor, animator. Site: Tomáš Sláma: Narrator (museum scene), script editor, animator. YT channel: @YTomS Václav Rozhoň: Writer, animator. Blog: Václav Volhejn: Narrator, animator, script editor, video editor. YT channel: @vvolhejn Thank you to all our beta testers for their feedback: the KSP gang, Carmen Bach. Thank you to Technikum29 for letting us play with their amazing punch card sorter. Animations: Motion Canvas, a TypeScript library Music: From the Bodytonics album by Blue Dot Sessions Obama sort video: If you wonder why Obama knew bubblesort -- John McCain got the same question a few months earlier, so this was likely a diligent preparation of his team. 0:00 Intro 1:12 100k subs celebration livestream 1:29 Bucket sort 3:18 Radix sort, first attempt 4:42 Radix sort, second attempt 7:10 But is it fast? 8:57 Punch card sorter from 1958 10:45 Why isn’t everyone using it? 11:30 Floating point trick 14:30 In conclusion 15:38 80,000 Hours 16:45 Thanks