Internshala Android Developer Interview Questions and Answers

They will give you problem to solve

Machine coding round

Basic Aptitude test

Coding Round is little tough.

Q1. Formal conversation about the projects and all that kind of stuff
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Q2. What kind of project you have worked on
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Q3. How you tackles different project
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Q1. Find duplicates in an array
Ans. 
Use a hash set to find duplicates in an array of strings.
• Create a hash set to store unique elements.

• Iterate through the array and check if the element is already in the hash set.

• If it is, then it is a duplicate. If not, add it to the hash set.
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Q2. Find single duplicate element in an array where contents of the array are length of array - 1
Ans. 
Find the single duplicate element in an array of strings with length n-1.
• Iterate through the array and use a HashSet to keep track of elements seen so far.

• If an element is already in the HashSet, that is the duplicate element.

• Return the duplicate element once found.
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Create a student support system

Q1. Design an order and payments system for an EdTech company
Ans. 
Design an order and payments system for an EdTech company
• Allow users to browse and select courses

• Implement a shopping cart for users to add courses

• Integrate payment gateways for secure transactions

• Provide order confirmation and receipt to users

• Allow users to track their order status
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Q1. About Myself in details
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Q2. Past internships and work experiences
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Q1. Primary keys, Unique key
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Q2. Usage advantages and disadvantages of Indexing
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SQL- 1 departments with no users
2 dept_id and their respective no. of users

DSA1: Most frequent no. in an array
DSA2: Zero Sum subarray exists

Q1. DSA - related to arrays hard
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Q2. Stack medium level
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Q1. What is react native
Ans. 
React Native is a framework for building cross-platform mobile applications using JavaScript and React.
• Allows developers to write code once and deploy it on both iOS and Android platforms

• Utilizes native components for better performance and user experience

• Supports hot reloading for faster development iterations
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Medium level coding question

Q1. Intreview round asked about project mentioned in CV
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Q2. Basic of reacts, opps question,sql queries
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