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2,275 lead android engineer interview questions shared by candidates

I was interviewed by two employees from the IT development team, I needed to remove duplicate entries from an array without modifying the order. On my answer I used a list, the answer was correct but I needed to improve it using hash map. They asked me how a binary tree works and I the complexity using my solution, searching with binary trees and hash maps and I couldn't explain at all.
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Android Developer

Interviewed at Booking.com

4.1★
Jan 27, 2014

I was interviewed by two employees from the IT development team, I needed to remove duplicate entries from an array without modifying the order. On my answer I used a list, the answer was correct but I needed to improve it using hash map. They asked me how a binary tree works and I the complexity using my solution, searching with binary trees and hash maps and I couldn't explain at all.

ArrayList, Linked List what happens internally? Loaders, MVVM, count number of objects for a particular class. count number of repeated elements in an array using single loop let, apply in kotlin lamda expressions in java, why they introduced these
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Android Lead

Interviewed at People Tech Group

2.6★
Sep 14, 2019

ArrayList, Linked List what happens internally? Loaders, MVVM, count number of objects for a particular class. count number of repeated elements in an array using single loop let, apply in kotlin lamda expressions in java, why they introduced these

You're in a house that has two rooms, and there's no way to see from one room to the other. One room has three light switches, and the other room has three corresponding light bulbs. You don't know which switch triggers which bulb and can only make a single trip between the two rooms. How do you find out?
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Senior Android Developer and Team Lead

Interviewed at Softxpert

3.8★
Oct 17, 2024

You're in a house that has two rooms, and there's no way to see from one room to the other. One room has three light switches, and the other room has three corresponding light bulbs. You don't know which switch triggers which bulb and can only make a single trip between the two rooms. How do you find out?

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