Let’s say that you have a binary tree and we needed to know it’s maximum depth. Binary tree input data [3,9,20,null,null,15,7] could be visualised as follows: In the above example, the depth would be 3. As there are 3 levels. How would we write some Pytho... (more…)

“Like wheels, but instead of a pre-built python package, it’s a pre-built python interpreter”... (more…)

Written by Arnaud Rachez, Rodrigo Castro — September 30, 2017... (more…)

Writing a simple Python compiler: 1. hello, fibonacci... (more…)

Think COBOL is dead? About 95 percent of ATM swipes use COBOL code, Reuters reported in April, and the 58-year-old language even powers 80 percent of in-person transactions. In fact, Reuters calculates that there’s still 220 billion lines of COBOL code cu... (more…)