Red-Green-Code

Programming interviews sometimes include problems that don’t require coding, but use some of the same skills as programming puzzles: What’s the best approach to answer the Google interview question, “how many golf balls can fit inside a school bus”? (answer) I’m doing most of my writing on Quora this year. For more information, see A […]

Quora questions are often about specific people. Here’s one about top competitive programmer Errichto, who is releasing a YouTube video every day in April: How long does it take to get as good in competitive programming as Errichto? (answer) I’m doing most of my writing on Quora this year. For more information, see A Project […]

This question is similar to some I’ve covered before, but I like how it’s worded: How long does it take to finish a problem you don’t know how to solve? (answer) I’m doing most of my writing on Quora this year. For more information, see A Project for 2020.

There’s a concept in psychology called the forgetting curve. It describes how, once you learn something, you gradually forget it if you don’t actively review. Learning to solve coding interview questions is no exception: Even if I solve 200 algorithm questions on LeetCode and think that I understood solutions, after 2 months without solving any […]

Although it’s unwise to abuse the Submit button, sometimes a few submissions is what it takes to get the most out of a problem. Is it okay to submit multiple times and look at the test cases that you’ve failed when practicing competitive programming? (answer) I’m doing most of my writing on Quora this year. […]