Raja Software Labs Android Developer Interview Questions and Answers

Q1. General resume discussions
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Q2. HR questiosn aslso
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2 DSA question was asked

40 questions in 20 minutes

Q1. Stones games 2 leetcode
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Q2. Permutations of array
Ans. 
Generate all possible permutations of an array of strings
• Use recursion to generate permutations

• Swap elements to create different permutations

• Base case: when array size is 1, return array as permutation
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Q1. Project discussion
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Used an online IDE and asked general DS Algo questions

Q1. System Design HLD question to make URL shortener
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Q1. General HR Aptitude questions
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Online assessment with quantitative and qualitative questions

Some Tree traversal coding question

Q1. Load balancer design question
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Q2. Technical challenges faced
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Q1. What is HashMap?
Ans. 
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
• HashMap allows quick access to values based on their keys

• Keys must be unique and values can be duplicated

• HashMap is not thread-safe and requires synchronization for concurrent access

• Java's HashMap implementation uses hashing to distribute keys across buckets
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Q2. It’s a collection framework.
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In this round, we have questions from time relation, blood relation, programming questions. Around 45 questions in 30 minutes,

In this round, we have two programming questions. Both are hacker rank easy to medium level.

Q1. In this round, we have questions from the core java and a famous scooter tire question.
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3 basic coding question about recursion, string manipulation and queues

Q1. HR and tech round included in one for me. Brief about myself.
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Q2. Question about Android development.
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They asked five problems. We need to solve atleast three problems out of five.

They asked ten questions related to reasoning and quantitative aptitude.We need to solve atleast 7 out of 10.

Q1. They asked questions based on your project which you mentioned in your resume and skills.
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Q2. They asked about your personality related questions
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