I received a coding challenge on CodeSignal. It presented four questions with a 70-minute time limit.

The first couple of questions were easy. The third one took me a bit more time to solve. For the last question, I passed 66% of the test cases before running out of time.

I earned 1100 out of 1200 points on the test, but only received a weighted score of 775 out of 850. I've heard this score is too low for Quora.

I was asked a couple of 2D matrix questions.

One wasn't too difficult, and the other was slightly more difficult.

Apparently, Q4 is worth the most points, so I would recommend spending as much time as possible on that question.