Recruiter called and scheduled the process for the coming week.

Due to COVID, the interview was conducted virtually from home.

An online test was conducted on CoderPad and a meeting was held on BlueJeans.

The interview process is all about speed and accuracy, and overall, they might grill you in the later stages as well.

Time constraint is a bit of a challenge in the process.

Caching.

What measures should be taken to improve the performance of a system, etc.?

Check if a word exists in a 2-D matrix of characters.

Check if a given tree is a valid BST.

Find the product of numbers except the current element in an array of integers. (TC = O(n), no division allowed).