Yahoo DSA Interview Questions

What Yahoo asks in the DSA round

Yahoo sticks to well-known medium problems across arrays, strings, trees and hash maps, with core CS fundamentals and a light system design round.

Across the 34 questions on this page, the weight sits on these patterns:

• Backtracking — 4 questions · read the backtracking guide
• Breadth-First Search — 3 questions · read the breadth first search (bfs) guide
• Math — 3 questions
• Binary Search — 2 questions · read the modified binary search guide
• Depth-First Search — 2 questions · read the depth first search (dfs) guide
• Design — 2 questions · read the design data structure guide
• Divide and Conquer — 2 questions
• Greedy — 2 questions · read the greedy guide

How to prepare for the Yahoo interview

1. 1. Start at the top of the list above. The patterns are ordered by how often Yahoo 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 backtracking 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 Yahoo topic you have actually covered.
4. 4. Write the approach before the code. Yahoo 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.

Yahoo interview questions — FAQ

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