Testbook.com Senior Android Developer Interview Questions and Answers

Data structures, particularly strings, play a crucial role in problem-solving.

Q1. Please tell me about yourself.
Ans. First of all , thank you! For this opportunity to introduce my self. I am Akash kumar kushwaha, I was born in bihar 2001 , but I live in ghaziabad now. I m currently pursuing my b.tech from IMS engineering college ghaziabad. And I completed my 10th and 12th from co-operative uchh vidyalaya jagdishpur with score 60% in 10th and 65% in 12th . And my hobby is playing cricket and travelling.
Answered by AKASH KUMAR KUSHWAHA
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Q2. Why should we hire you?
Ans. 
I have a strong technical background, excellent problem-solving skills, and a passion for software development.
• I have a Bachelor's degree in Computer Science and 5 years of experience in software development.

• I am proficient in multiple programming languages such as Java, Python, and JavaScript.

• I have a track record of delivering high-quality code on time and within budget.

• I am a quick learner and always eager to stay u...read more
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Q3. What are your strength and weakness .
Ans. 
Strength: Problem-solving skills, Weakness: Impatience
• Strength: Strong problem-solving skills demonstrated through successful projects

• Weakness: Impatience when tasks take longer than expected, working on improving patience through time management techniques
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Q4. Why did you choose career in software developer.
Ans. 
Passion for problem-solving and creating innovative solutions drove me to pursue a career in software development.
• Fascination with technology and its potential to improve lives

• Enjoyment of logical thinking and coding challenges

• Desire to constantly learn and adapt in a fast-paced industry

• Previous experience in programming projects or internships
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Q1. What is your area of expertise in programming languages?
Ans. 
My area of expertise in programming languages is in web development, specifically with JavaScript, HTML, and CSS.
• Proficient in JavaScript for client-side scripting and server-side development with Node.js

• Experienced in building responsive and interactive web applications using HTML and CSS

• Familiar with popular frameworks and libraries like React, Angular, and Bootstrap
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Q2. What is JavaScript, and what are its benefits?
Ans. 
JavaScript is a high-level, interpreted programming language used for creating interactive websites.
• JavaScript is commonly used for client-side web development.

• It allows for dynamic content updates without reloading the page.

• JavaScript can be used to create interactive elements like forms, animations, and games.

• It is supported by all major web browsers.

• JavaScript can also be used for server-side development with Node.j
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3 coding question around prime number arrays and strings

Q1. Introduce youself
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Q2. Question around project and skill in the resume and one coding question to solve
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Q1. Question on project and skill in resume
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Q2. 2 question arouond data structer and algorithm
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Q1. What is latest technology you have worked on
Ans. 
I have worked on React Native for mobile app development.
• Developed a mobile app for a client using React Native

• Used Redux for state management

• Integrated with Firebase for real-time database and authentication

• Implemented push notifications using Firebase Cloud Messaging
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Q1. Why you want to join us
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Q1. Explain about Android lifecycle
Ans. 
Android lifecycle refers to the series of states that an activity or fragment goes through from creation to destruction.
• Android lifecycle includes states like onCreate, onStart, onResume, onPause, onStop, onDestroy, etc.

• Activities and fragments transition between these states based on user interactions and system events.

• Understanding Android lifecycle is crucial for managing resources, saving state, and handling config...read more
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Q2. Explain about fragment lifecycle
Ans. 
Fragment lifecycle refers to the series of events that occur in the lifespan of a fragment in an Android app.
• Fragments go through various states like created, started, resumed, paused, stopped, and destroyed.

• Fragment lifecycle methods include onCreate(), onCreateView(), onResume(), onPause(), onStop(), onDestroy(), etc.

• Fragment lifecycle is closely tied to the hosting activity's lifecycle.

• Understanding fragment lifecyc...read more
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Q1. Data structures
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Q1. System Design fundamentals
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Q1. System Design questions
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Q1. What do you think about the negative news going around the company
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Q1. Why join this company
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45 mins, Amcat , Basic to advance question

2 hrs duration with 2 easy level dsa questions and 15 around mcqs based on core cs concepts.

Q1. Implement stack using linked list.
Ans. 
Implementing stack using linked list
• Create a Node class with data and next pointer

• Create a Stack class with top pointer

• Implement push() method to add element to top of stack

• Implement pop() method to remove element from top of stack

• Implement peek() method to return top element without removing it
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Q2. Print first duplicate value in a string.
Ans. 
Find the first duplicate value in an array of strings.
• Create a hash table to store the frequency of each string.

• Iterate through the array and check if the string already exists in the hash table.

• If it does, return the string. If not, add it to the hash table.

• If no duplicates are found, return null or an appropriate message.
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Asking the dp and tree and other

Q1. Asking the project based question and
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Q1. Some question asking base on cultural base and resume based
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