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Android Developer Interview Questions
8,366 android developer interview questions shared by candidates
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What is a service?
Design question and a coding problem.
How would you handle a retrofit callback that then calls other API calls
Lifecycle of android
The problem involves processing a 2D array representing an image, where each pixel is either a `0` or `1`. The array may contain one or more rectangular regions of `0`s surrounded by `1`s. The tasks are: 1. **Identify Rectangles**: Write a function that detects all rectangles of `0`s in the 2D array, returning the coordinates of the top-left and bottom-right corners for each rectangle. 2. **Handle Multiple Rectangles**: Adapt the solution to correctly identify and manage multiple separate rectangles within the image. 3. **Check Point Inside Rectangles**: Implement functionality to determine if a given point is inside any of the detected rectangles.
Write an app that makes a HTTP call to their API, pulls down the data in JSON. Parse the data and present it in a list.
What methods you need to override if you are dealorking with hash map?
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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