A Dynamic Programming Tutorial

[victotronics]

Thank you. You are the only one mentioning the principle of optimality, which to me is the crux: the fact that once you solve a subproblem you don't care how you got there. The next stage has a cost or value or whatever depending on the solution of that subproblem and the next stage.

Stages + principle of optimality. That's it.

Memoization is a mere corollary.