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The Bedrock of Software Design
https://www.reddit.com/r/programming/comments/1vcl5bj/the_bedrock_of_software_design/

<!-- SC_OFF -->I drafted this post years ago but didn’t finish it until now. The concept I write about has shaped the way I design software more than anything else, and I believe every software engineer should be introduced to it early in their career. P.S. I don’t want the title to come across as clickbait: the post is about ADT. <!-- SC_ON --> submitted by /u/alex35mil (https://www.reddit.com/user/alex35mil)
[link] (https://alex.draftist.io/blog/the-bedrock-of-software-design-ycqvcedsj) [comments] (https://www.reddit.com/r/programming/comments/1vcl5bj/the_bedrock_of_software_design/)
Variations on a theme of sorting
https://www.reddit.com/r/programming/comments/1vd5q3j/variations_on_a_theme_of_sorting/

<!-- SC_OFF -->Semisort Reorder an array so that identical keys are grouped contiguously Keys do not need to be in sorted order Stable Partition
Group by predicate, preserve order K-smallest selection, single Get the k-smallest key from the array K-smallest selection, list Get the k-smallest key from the array, and everything smaller (or equal), in any order K-smallest selection, list sorted Get the k-smallest key from the array, and everything smaller (or equal), in sorted order <!-- SC_ON --> submitted by /u/Grouchy-Trade-7250 (https://www.reddit.com/user/Grouchy-Trade-7250)
[link] (https://jshun.csail.mit.edu/6506-s24/lectures/lecture6-2.pdf) [comments] (https://www.reddit.com/r/programming/comments/1vd5q3j/variations_on_a_theme_of_sorting/)