Athena Health Interview Experience | Set 2
Question Details
Round 1:10 Aptitude questions with difficulty level hard. Round 2:3 programs given. 1st one mandatory.1) Replace wild cards with all possible combinations of zeros and one...
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Round 1 10 Aptitude questions with difficulty level hard.
Round 2 3 programs given. 1st one mandatory. 1) Replace wild cards with all possible combinations of zeros and ones. String given: 0?1?
Result 0010 0011 0110 0111 2) Triplet problem. Array = {2,3,7,6,8,9} and k=6. {2,3,6} (2x3 = 6) {3,2,6} (3x2 = 6) 3) Another one dynamic programming problem. I couldn't remember. Round 3(F2F): if n=3 prepare matrix like 3 3 3 3 3 3 2 2 2 3 3 2 1 2 3 3 2 2 2 3 3 3 3 3 3 and modify my code to print 1 1 1 1 1 1 2 2 2 1 1 2 3 2 1 1 2 2 2 1 1 1 1 1 1 Questions about previous projects done and my roles on it and my leadership capabilities. Few technical questions from Threads and multi-processing and. Discussed about triplet problem done in round 2 and how to tweak my algorithm to avoid getting redundant entries. Search in row wise, column wise sorted matrix {10, 20, 30, 40} {15, 25, 35, 45} {27, 29, 37, 48} {32, 33, 39, 50} Round 4(F2F): Level order traversal of a tree and discussed about time and space complexity of both techniques(Using Queue and recursive technique) https://www.geeksforgeeks.org/dsa/level-order-tree-traversal/ Array of 0's and 1's. Move 0's to left and 1's to right side. https://www.geeksforgeeks.org/dsa/segregate-0s-and-1s-in-an-array-by-traversing-array-once/ Given an array of integers, replace every element with the next greatest element (greatest element on the right side) in the array. {16, 17, 4, 3, 5, 2} = {17, 5, 5, 5, 2, -1} https://www.geeksforgeeks.org/dsa/replace-every-element-with-the-greatest-on-right-side/ Find loop in Linked list. https://www.geeksforgeeks.org/dsa/detect-loop-in-a-linked-list/ Detect and remove loop in a Linked list. https://www.geeksforgeeks.org/dsa/detect-and-remove-loop-in-a-linked-list/ Difference between Tree and Trie data structure along with implementation of Trie and real time examples. Questions on data structure for implementing dictionary and its pros and cons. Questions on implementation of Linux directory structure. Discussed about logic I used in 2nd round for wild card permutation question and discussed time complexity of it. Round 5(F2F): Given 3 points in below triangle, find wheather these 3 points are forming equalaterial triangle? (5,12,14) = true (6,18,22) = true (2,11,15) = false 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 and so on.. Questions about previous projects and current one. Why Athena and shifting from old company in short period? Aptitude problems from first round and how i understood and approached towards solution Deep discussion about 8 queens problem and its solution(I used backtracking approach) Round 6(F2F): Turing machine problems.(https://en.wikipedia.org/wiki/Turing_machine_examples) 1. There is a sequence of bytes coming. after every instance I need to check wheather that number can be devisible by 3 or not. Need turing machine diagram and approach. 2. Similar turing machine question for prime number. Tree level order and spiral order traversal and its complexity analysis. Questions on array split to two halves of equal sum. Round 7(HR): Behavioral questions and team skills.
About This Question
This is a reported interview question from a athenahealth interview for a swe role during the phone screen round reported in 2025.
It covers the following topics: Linked List, Trees, Strings, Dynamic Programming, Stack Queue, Recursion, Backtracking, Math, Trie, Queue, Hash Table, Arrays, Matrix .
Difficulty rating: Hard
Topics
More Athenahealth Interview Questions
About Athenahealth Interview Reports
This question was reported by a candidate who interviewed at Athenahealth. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.
Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at Athenahealth are the higher-signal extractions to take from this report.
For broader preparation context, the Athenahealth interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.
How To Practice This Type of Question
Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.
Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in Athenahealth reports consistently are the ones worth investing in; one-off niche problems are not.
During Your Athenahealth Round
Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.
The single most predictive failure mode in Athenahealth reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.