Products with product_id = 1 is ordered in February a total of (60 + 70) = 130. Products with product_id = 2 is ordered in February a total of 80. Products with product_id = 3 is ordered in February a ...

Getting good at SQL for interviews can feel like a puzzle. You know the basics, but putting them together in a way that impresses people is another thing entirely. Luckily, there are great tools out ...

LeetCode focuses mainly on algorithms, while data science requires skills like SQL, statistics, and working with real data. Different platforms offer various ways to prepare, from building portfolios ...

HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses, where developers compete by trying to program according to provided specifications.

Abstract: The current state-of-the-art methods for showing inapproximability in PPAD arise from the $\varepsilon$-Generalized-Circuit ($\varepsilon$-GCIRCUIT) problem. Rubinstein (2018) showed that ...

You’ve finally sat down to write that challenging midterm paper. Invigorated by a pressing deadline, you’ve cleared your desk, braced the door against roommates, and silenced your Twitter feed. You ...

Those who monitor their goal and problem-solve when they are not on track are much more likely to achieve and maintain their goal than those who don’t. Research is clear about this fact: those who ...

If you need to come up with a new idea, stop trying to think of the best one. Instead, imagine the worst idea possible: What would be the wrong way to solve this problem? What do our customers ...