FrontRow Android Developer Interview Questions and Answers

Q1. Build an sample app server with express.js
Ans. 
Build a sample app server using express.js
• Install express.js using npm

• Create a new express app

• Set up routes and middleware

• Start the server to listen on a specific port
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Q2. How do you make connection with database in your project
Ans. 
I use JDBC (Java Database Connectivity) to establish connection with the database in my project.
• Use JDBC API to connect to the database

• Load the JDBC driver

• Create a connection object

• Create a statement object

• Execute SQL queries
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Q3. Write multer middleware code.
Ans. 
Multer is a middleware for handling multipart/form-data, used for file uploads in Node.js.
• Install multer package using npm: npm install multer

• Require multer in your Node.js file: const multer = require('multer')

• Set up multer middleware with desired options: const upload = multer({ dest: 'uploads/' })

• Use the upload middleware in your route handler to process file uploads
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2 Graph question of leetcode

Q1. DSA Questions of leetcode
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Q2. DSA Questions
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Modrate data structure question will be assigned there will be 2 qustion you have to pass the first question to access the second one

Q1. Wrting and reading will be tested
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Q1. Use to ask simple quires about the topic mentioned in resume
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Average dsa topics related question.Mostly two pointer related questions were asked;

Providing data analytics based on exploratory data analysis techniques based on python language

Q1. Family background and other tehcnical related questions
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Swap first and last digit num using python

Q1. Combination the word like environment
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Q1. DSA question on dynamic programming dp
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Q2. Related to java oops and java 8.
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Q3. System design on Netflix
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Q1. Implement Doubly linked list
Ans. 
Doubly linked list is a data structure where each node contains a reference to the previous and next node.
• Create a Node class with data, prev, and next pointers

• Implement methods to add, remove, and traverse nodes in the list

• Handle edge cases like adding to an empty list or removing the only node
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Q2. Phone book design
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Q1. 2 code and 2 MySQL query
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