Pinterest DSA Interview Questions

What Pinterest asks in the DSA round

Pinterest mixes medium DSA with a strong practical round — recommendation and feed-shaped problems, hash maps and heaps, plus a design discussion on ranking at scale.

Across the 60 questions on this page, the weight sits on these patterns:

• Breadth-First Search — 8 questions · read the breadth first search (bfs) guide
• Dynamic Programming — 8 questions · read the dynamic programming guide
• Greedy — 7 questions · read the greedy guide
• Backtracking — 5 questions · read the backtracking guide
• Binary Search — 4 questions · read the modified binary search guide
• Two Pointers — 4 questions · read the two pointers guide
• Union Find — 4 questions · read the graphs guide
• Simulation — 3 questions

How to prepare for the Pinterest interview

1. 1. Start at the top of the list above. The patterns are ordered by how often Pinterest uses them, so the first two or three buy you the most coverage per hour.
2. 2. Solve by pattern, not at random. Doing eight breadth-first search problems in a row is what makes the ninth recognisable in an interview — jumping between topics does not.
3. 3. Tick problems off as you go so the gaps are visible. The per-pattern counts tell you which Pinterest topic you have actually covered.
4. 4. Write the approach before the code. Pinterest interviews are judged on the reasoning as much as the working solution.
5. 5. Pair this with the pattern guides when a topic is new, and the system design sheet if the role is senior enough to have that round.
6. 6. If this is a campus or off-campus drive rather than a lateral move, the placement preparation guide covers the stages around the DSA round — aptitude, core subjects and the HR interview — in the order they actually happen.

Pinterest interview questions — FAQ

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