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OA Practice·DSA·Placements

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The DSA you actually get asked in OAs.

60-Day Placement Prep

362 problems·39 topics·9 weeks

Made by

International Master, IIT Bombay

This is the same order I studied DSA in before my own placements. First the idea, in plain notes, then the exact kind of problems companies put in their OAs. No 500-question lists. Just what comes up.
If you know one programming language, you can start today.

How to use this

One week at a time, in order.

Start at Week 1 even if arrays feel easy. Read the topic note, then solve its problems yourself before looking at any solution. Finish the week's problem set before you move on. Stuck for 30 minutes? Read the editorial, then solve it again from scratch.
About an hour a day. Nine weeks and you are OA-ready.
WK.01QUEST BEGINS
WK.02TRIAL UNLOCKED
WK.03MINI-BOSS
WK.04POWER-UP
WK.05BONUS ROUND
WK.06DEEP SPACE
WK.07FINAL STRETCH
WK.08QUEST BEGINS

More weeks are on the way. This roadmap grows as we publish them.