Mercury Systems Interview Questions

Written by IQ Team

Reviewed by Jay Feng

Published March 27, 2026

Estimated reading time: 4 minutes

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Mercury Systems Interview Guides

Click or hover over a slice to explore questions for that topic.

Behavioral

(5)

Data Structures & Algorithms

(4)

Machine Learning

(2)

Analytics

(1)

SQL

(1)

Practice for the Mercury Systems interview with these recently asked interview questions.

Question	Topic	Difficulty
Scrambled Tickets	Data Structures & Algorithms	Hard
Consider a trip from one city to another that may contain many layovers. Given the list of flights out of order, each with a starting city and end city, write a function `plan_trip` to reconstruct the path of the trip so the trip tickets are in order. Example: For a trip from Bombay to Beijing: Input: `flights = [ ['Chennai', 'Bangalore'], ['Bombay', 'Delhi'], ['Goa', 'Chennai'], ['Delhi', 'Goa'], ['Bangalore', 'Beijing'] ] output = [ ['Bombay', 'Delhi'], ['Delhi', 'Goa'], ['Goa', 'Chennai'], ['Chennai', 'Bangalore'], ['Bangalore', 'Beijing'], ]` View Question Show Solution
Lasso vs Ridge	Machine Learning	Easy
Hurdles In Data Projects	Behavioral	Medium

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Calculate Moving Average	SQL	Easy
Predict Customer Churn	Machine Learning	Medium
A/B Test Significance	Statistics	Medium
Optimize Query Performance	SQL	Hard
Feature Importance Analysis	Machine Learning	Medium
Clean Missing Data	Python	Easy
Neural Network Architecture	Deep Learning	Hard
Calculate Cohort Retention	SQL	Medium
Bayesian Probability	Statistics	Easy
Recommend Similar Products	Machine Learning	Hard

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