HackerRank Interview Preparation Kit
A free structured kit of about seventy problems grouped by topic, on the platform many companies use for their own screening rounds. Practising in the same environment you will be assessed in removes one source of interview day friction.
Platform
Interview Prep
HackerRank
3 to 5 weeks
Beginner
Free
What it is
A curated free practice track grouped into topics such as arrays, dictionaries, sorting, string manipulation, greedy algorithms, search, dynamic programming and graphs, with a timed mock test at the end.
The environment argument
A large number of companies run their first round screen on HackerRank. The editor, the input handling and the way test cases report failure are all specific to it, and discovering that under a sixty minute clock costs real time. Practising here removes that.
How to use it
Work it early, as a warm up rather than as your main preparation. The difficulty ceiling is lower than a real onsite, so treat completion as a starting point, not a finish line.
Best for: early stage preparation, and anyone with a HackerRank screen booked.
Ready to start?
Opens on HackerRank in a new tab.
Stuck on something specific?
Writing only gets you so far. If you want an answer to your situation rather than the general case, book a session and we will work through it together. Every session is free; a few slots open each week.
Follow along
New writing, resources and project ideas land here first.