The range minimum query problem (RMQ) used to solve LCA is a really fun one. I spend two lectures on it in my advanced data structures course. The approach covered in the slides linked here is perhaps the best-known way to solve LCA via RMQ, but I personally prefer one developed by Fischer and Heun in 2006. Check the first two lectures of my course (https://web.stanford.edu/class/archive/cs/cs166/cs166.1256/) for details.
OT, but as a kid I remember being perpetually confused whenever "least common multiple" or "least common denominator" came up in math class. I always parsed them as "least common", so "rarest", which of course didn't make any sense.
Maybe the takeaway is that I was born to be a programmer, and this was my fifth grade version of the old joke where the programmer's wife asks him to "get a gallon of milk, and if they have eggs, get a dozen."
6 comments
[ 3.0 ms ] story [ 22.0 ms ] threadA preprint of the paper is available here: https://web.archive.org/web/20250708141740/https://www.ics.u...
Maybe the takeaway is that I was born to be a programmer, and this was my fifth grade version of the old joke where the programmer's wife asks him to "get a gallon of milk, and if they have eggs, get a dozen."