This post is to review the frequently asked problems in dynamic programming.
divide and conquer: basic
This post is to review the frequently asked problems in divide and conquer, including multiplication of polynomials, merge sort and quick sort.
greedy algorithm: basic
This most is to review the very basic problems in greedy algorithm.
relevant CLI for rails
As a ruby beginner(or even a full-stack development beginner!), it took me couple of days to setup the environment of ruby and rails. As you might also have experienced the issues below, I recorded it in hope that it may help.