How often are these problems asked?
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Aon interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Problem database last updated: June 20, 2025
A
Aon Coding Interview Questions
3 problems · 1 Easy, 1 Medium, 1 Hard · Ranked #354 of 458
Difficulty breakdown
1 Easy
33% · avg 23%
1 Medium
33% · avg 59%
1 Hard
33% · avg 18%
Top topics
bit-manipulation
100%29.7x
array
100%1.7x
greedy
33.3%3.9x
Interview profile
Based on 3 reported problems, Aon interviews are significantly harder than average - 33% Hard vs 18% across all companies.
Compared to the industry average, Aon puts unusual emphasis on bit-manipulation (100% of problems, 29.7x the industry average), array (100% of problems, 1.7x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are bit-manipulation (100%), array (100%), greedy (33.3%). Problems below are sorted by frequency, the ones at the top are asked most often.
All 3 problems
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Construct The Minimum Bitwise Array II You are given an array nums consisting of n prime integers. You need to construct an array ans of length n such that for each index i, ans[i] OR (ans[i] + 1) eq... | Medium | Very Likely | bit-manipulationarray | Solve |
Construct The Minimum Bitwise Array I You are given an array nums consisting of n prime integers. You need to construct an array ans of length n such that for each index i, ans[i] OR (ans[i] + 1) eq... | Easy | Very Likely | bit-manipulationarray | Solve |
Minimize OR of Remaining Elements Using Operations You are given a 0-indexed integer array nums and an integer k. | Hard | Very Likely | arraygreedybit-manipulation | Solve |
Construct The Minimum Bitwise Array II
SolveYou are given an array nums consisting of n prime integers. You need to construct an array ans of length n such that for each index i, ans[i] OR (ans[i] + 1) eq...
MediumVery Likely
bit-manipulationarray
Construct The Minimum Bitwise Array I
SolveYou are given an array nums consisting of n prime integers. You need to construct an array ans of length n such that for each index i, ans[i] OR (ans[i] + 1) eq...
EasyVery Likely
bit-manipulationarray
Minimize OR of Remaining Elements Using Operations
SolveYou are given a 0-indexed integer array nums and an integer k.
HardVery Likely
arraygreedybit-manipulation
Preparing for your Aon coding interview
Aon interviews focus heavily on bit-manipulation, array, greedy 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. Aon 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.
Looking for more companies? Browse all 458 companies in our directory, or sharpen your fundamentals with our free data structure visualizers and AI-powered DSA tutor.
Frequently Asked Questions
What coding problems does Aon ask in interviews?add
Aon has been reported to ask 3 distinct coding problems. The most common topics are bit-manipulation, array, greedy. 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.
How hard are Aon coding interviews?add
Based on 3 reported problems, Aon 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.
How should I prepare for a Aon coding interview?add
Start with the highest-frequency problems listed on this page. Focus on the core topics: bit-manipulation, array, greedy. Practice solving them under time pressure and explaining your approach out loud. Mock interviews with AI can simulate the real experience.
Other companies to explore
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