Infosys Software Developer Interview Questions, Process, and Tips for Experienced

Q1. CRUD app in angular with in 15min
Ans. 
Create a CRUD app in Angular within 15 minutes
• Set up Angular project with CLI

• Create components for Create, Read, Update, and Delete operations

• Implement services to interact with backend API

• Use Angular Material for UI components

• Test the app functionality
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Q2. Golang question
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Asked general ability questions and quant and reasoning questions

Asked questions related to data structures

Q1. What are the different app states in an iOS application?
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Q1. Asked about Pegination
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Moderate and coding was based array problem using brute force algorithm

Q1. Java and oops and dsa question
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Q2. Diff between abstraction and interface
Ans. 
Abstraction is hiding the implementation details while interface is a contract that defines the methods that a class must implement.
• Abstraction is achieved through abstract classes or interfaces in object-oriented programming.

• Abstraction allows us to hide complex implementation details and only show the necessary features to the outside world.

• Interfaces in Java are used to define a contract that a class must follow by ...read more
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Q3. What is hashtable
Ans. 
A hashtable is a data structure that stores key-value pairs and allows for quick retrieval of values based on their keys.
• Uses a hash function to map keys to indexes in an array

• Provides constant time complexity for insertion, deletion, and retrieval operations

• Commonly used in programming languages like Java and Python for implementing dictionaries or maps
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Q4. What is stack and queue
Ans. 
Stack is a data structure that follows Last In First Out (LIFO) principle. Queue is a data structure that follows First In First Out (FIFO) principle.
• Stack: Last In First Out (LIFO) data structure. Example: stack of plates.

• Queue: First In First Out (FIFO) data structure. Example: waiting line at a ticket counter.
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Q1. About degree and company
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Q1. What is exception handling?
Ans. 
Exception handling is a mechanism to handle runtime errors in a program to prevent it from crashing.
• It allows the program to gracefully handle unexpected situations.

• Exceptions can be caught and handled using try-catch blocks.

• Common exceptions include NullPointerException, ArrayIndexOutOfBoundsException, and IOException.

• Handling exceptions properly can improve the reliability and robustness of a software application.
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Q2. What different types of interfaces? features of java 8? current version they are using?
Ans. 
There are different types of interfaces in Java, features of Java 8 include lambda expressions and streams, and the current version is Java 15.
• Types of interfaces in Java include normal interfaces, functional interfaces, and marker interfaces.

• Features of Java 8 include lambda expressions for functional programming, streams for processing sequences of elements, and default methods in interfaces.

• Current version of Java i
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