One online coding assessment and two tech rounds, one leetcode medium difficulty question per round.
Software Developer Intern Interview Questions
2,880 software developer intern interview questions shared by candidates
Few questions but very detailed
To create a 2d canvas class
Why Citadel? Any relevant experience?
It firsts start with some easy software engineering practice problems. The one I had is to randomly select people in a city proportional to the district population size. It is easy at first but later there were stretch goals like testing and optimizing the runtime in context of repetitions of calling the function with an acceptable error.
In the user interview, they asked about technical questions
Find kth smallest element in a BST.
A brain teaser question.
Design the class diagram for Bicycle rental company. Was unexpected but the difficult part is explaining the diagram over the phone. Some information is lost especially given the time constraints.
Find the largest k numbers in an enormous array of numbers. You cannot sort the array.
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