Josh Software Software Developer Interview Questions and Answers

Just practise time and work and appitude question

Just practise time and work and missing number question

Leetcode,and practise striver sheet as wel

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to represent multiple data types.

• Examples include method overloading and method overriding in object-oriented programming.
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Q2. What is runtime polymorphism
Ans. 
Runtime polymorphism is the ability of a function to behave differently based on the object it is called with.
• Runtime polymorphism is achieved through method overriding in object-oriented programming.

• It allows a subclass to provide a specific implementation of a method that is already provided by its superclass.

• The actual method that gets called is determined at runtime based on the type of object.

• Example: Animal class...read more
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2 hours test of 3 questions and we have to solve it in time and get maximum points

Q1. Basic fundamentals of computer engineering
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Q2. Project-based questions for students
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Q3. Difference between c and cpp
Ans. 
C is a procedural programming language while C++ is a multi-paradigm programming language with object-oriented features.
• C is a procedural programming language, while C++ supports both procedural and object-oriented programming.

• C does not support classes and objects, while C++ does.

• C does not have features like inheritance, polymorphism, and encapsulation, which are supported in C++.

• C++ has additional features like temp...read more
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3 questions on strings

Q1. What are promises?
Ans. 
Promises are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained together using .then() to handle success and failure.

• Example: new Promise((resolve, reject) => { ... }).then(result => { ... }).catch(error => { ... });
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Q2. What are async functions?
Ans. 
Async functions in JavaScript allow for asynchronous programming using the async/await syntax.
• Async functions are defined using the 'async' keyword before the function declaration.

• They allow for the use of the 'await' keyword within the function to pause execution until a promise is settled.

• Async functions always return a promise.

• Example: async function fetchData() { await fetch('https://api.example.com/data'); }
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Q3. What are node modules>?
Ans. 
Node modules are reusable code packages that can be easily imported and used in Node.js applications.
• Node modules are JavaScript libraries that can be easily installed using npm (Node Package Manager).

• They help in organizing code, improving code reusability, and managing dependencies.

• Examples of popular node modules include Express.js for web applications, Lodash for utility functions, and Mongoose for MongoDB interact
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Direct coding test with a magic number, balance parenthesis

Q1. Explain merge sort with code
Ans. 
Merge sort is a divide and conquer algorithm that recursively splits an array into halves, sorts them, and then merges them back together.
• Divide the array into two halves

• Recursively sort each half

• Merge the sorted halves back together
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Q2. Difference between authentication and authorization
Ans. 
Authentication verifies the identity of a user, while authorization determines what actions a user is allowed to perform.
• Authentication confirms the user's identity through credentials like username and password

• Authorization controls access to resources based on the authenticated user's permissions

• Example: Logging into a system (authentication) vs. accessing specific files or features within the system (authorization)
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Q3. Project discussion
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Q4. Database questions
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