I learned it back in the 1980s from "Algorithms + Data Structures = Programs" by Niklaus Wirth. There's a more recent edition available: "Algorithms and Data

I learned it back in the 1980s from "Algorithms + Data Structures = Programs" by Niklaus Wirth. There's a more recent edition available: "Algorithms and Data Structures". https://news.ycombinator.com/item?id=1921125 https://news.ycombinator.com/item?id=1921125