Problem database last updated: June 20, 2025
3 problems · 1 Easy, 1 Medium, 1 Hard · Ranked #348 of 458
1 Easy
33% · avg 23%
1 Medium
33% · avg 59%
1 Hard
33% · avg 18%
Based on 3 reported problems, Aurora interviews are significantly harder than average - 33% Hard vs 18% across all companies.
The most common topics are hash-table (33.3%), linked-list (33.3%), design (33.3%), doubly-linked-list (33.3%). Problems below are sorted by frequency, the ones at the top are asked most often.
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
LRU Cache Design a data structure that follows the constraints of a Least Recently Used (LRU) cache. | Medium | Very Likely | hash-tablelinked-listdesign | Solve |
Word Search II Given an m x n board of characters and a list of strings words, return all words on the board. | Hard | Likely | arraystringbacktracking | Solve |
Diameter of Binary Tree Given the root of a binary tree, return the length of the diameter of the tree. | Easy | Likely | treedepth-first-searchbinary-tree | Solve |
LRU Cache
SolveDesign a data structure that follows the constraints of a Least Recently Used (LRU) cache.
Word Search II
SolveGiven an m x n board of characters and a list of strings words, return all words on the board.
Diameter of Binary Tree
SolveGiven the root of a binary tree, return the length of the diameter of the tree.
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Aurora interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Aurora interviews focus heavily on hash-table, linked-list, design problems. If you're short on time, these are the categories to prioritize. The problems on this page are sorted by frequency, so start from the top and work your way down.
Beyond solving problems, practice explaining your approach. Aurora interviewers care about your thought process - how you break down a problem, consider edge cases, and evaluate tradeoffs between solutions. A clean O(n) solution you can explain clearly beats an O(log n) solution you can't articulate.
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Aurora has been reported to ask 3 distinct coding problems. The most common topics are hash-table, linked-list, design. 1 are Easy difficulty, 1 are Medium, and 1 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
Based on 3 reported problems, Aurora interviews are significantly harder than average - 33% Hard vs 18% across all companies. 33% of questions are Medium difficulty. Focus on the high-frequency Medium problems first, then work through the Hard ones.
Start with the highest-frequency problems listed on this page. Focus on the core topics: hash-table, linked-list, design. Practice solving them under time pressure and explaining your approach out loud. Mock interviews with AI can simulate the real experience.
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