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Senior Android Software Engineer Interview Questions

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1,907 senior android software engineer interview questions shared by candidates

1. Fragment , service , asynctask , service lifecycle 2. How to stop garbage collection (never had this question in my life before) 3. Lots of questions of Rx-java , though I told them I don't know that they keep on asking about it (like how to run multiple asynctask at the same time) 4. Android ndk 5. Android localization 6. At the end they asked me a data structure question You are given a list of strings , find the anagrams (not sure if the guy wanted me to compare every 2 of them) , time complexity of that etc , by that time I kind of understood they have a different requirement so did not try much for this question. 7. How two threads will communicate with each other (not sure if it is android related or general java question) 8 . How do you handle server exception 9 . Android recycleview
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Senior Android Developer

Interviewed at SiriusXM

3.4★
Aug 25, 2016

1. Fragment , service , asynctask , service lifecycle 2. How to stop garbage collection (never had this question in my life before) 3. Lots of questions of Rx-java , though I told them I don't know that they keep on asking about it (like how to run multiple asynctask at the same time) 4. Android ndk 5. Android localization 6. At the end they asked me a data structure question You are given a list of strings , find the anagrams (not sure if the guy wanted me to compare every 2 of them) , time complexity of that etc , by that time I kind of understood they have a different requirement so did not try much for this question. 7. How two threads will communicate with each other (not sure if it is android related or general java question) 8 . How do you handle server exception 9 . Android recycleview

I was given a problem involving an integer array, and the goal was to transform it in a way that required careful thought about time and space optimization. While discussing my solution, I suggested using a hashmap for optimization (which is wrong to begin with), which led to a follow-up question about how hashmaps work internally and I couldn't answer it.
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Senior Android Developer

Interviewed at OKG

3.7★
Dec 24, 2024

I was given a problem involving an integer array, and the goal was to transform it in a way that required careful thought about time and space optimization. While discussing my solution, I suggested using a hashmap for optimization (which is wrong to begin with), which led to a follow-up question about how hashmaps work internally and I couldn't answer it.

Online Test: Print top view of binary tree.(have few invalid test cases result what i felt which can waste your time) A problem statement with java classes you have to write few functions based on problem statement to give result. Find no. of groups of anagrams from given list of strings. Find max sum sub array. Print Left View of binary tree. Print bottom view of binary tree.
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Senior Android Developer

Interviewed at PhonePe

4.1★
Aug 11, 2020

Online Test: Print top view of binary tree.(have few invalid test cases result what i felt which can waste your time) A problem statement with java classes you have to write few functions based on problem statement to give result. Find no. of groups of anagrams from given list of strings. Find max sum sub array. Print Left View of binary tree. Print bottom view of binary tree.

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