Nagarro Software Engineer Interview Questions, Process, and Tips

Q1. Difference between Iterator and Iterables
Ans. 
Iterator is an object that allows iteration over a collection, while Iterables are objects that can be iterated over.
• Iterator is used to iterate over elements in a collection, while Iterables are objects that can be iterated over using an Iterator.

• Iterables implement the Iterable interface, which allows them to be used in for-each loops in Java.

• Iterator has methods like hasNext() and next() to iterate over elements, wh...read more
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Q2. Use of lambda expression
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Lambda expressions are anonymous functions that can be used to create concise and readable code.
• Lambda expressions are used to create inline functions without a formal definition.

• They are often used in functional programming languages like Java, Python, and C++.

• Lambda expressions can be used to pass functions as arguments to higher-order functions.

• They are particularly useful for writing code that is more concise and r...read more
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Coding test was easy

Q1. Java version differences, new things in jdk 8 and jdk 11
Ans. 
JDK 8 introduced lambda expressions, streams, and default methods. JDK 11 included features like local-variable syntax for lambda parameters and HTTP client API.
• JDK 8: Lambda expressions allow functional programming, streams for processing collections, default methods in interfaces.

• JDK 11: Local-variable syntax for lambda parameters, HTTP client API for making HTTP requests.

• JDK 8: Example - Lambda expression: (int a, i...read more
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Q2. Define object oriented programming
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Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: In a banking system, a 'BankAccount' class can define attributes like account number and balance, and methods
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Q3. Define Functional interfaces
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Functional interfaces are interfaces with only one abstract method, used in Java for lambda expressions.
• Functional interfaces can have multiple default or static methods, but only one abstract method.

• They are used in Java to enable lambda expressions and method references.

• Examples of functional interfaces in Java include Runnable, Callable, and Comparator.
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General aptitude questions

Q1. String manipulation
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Q2. Container and POD difference
Ans. 
Containers are a lightweight, portable, and isolated runtime environment for applications, while Pods are a group of one or more containers sharing the same network and storage.
• Containers are individual units that package an application and its dependencies, while Pods are a higher-level concept that can contain multiple containers.

• Containers are isolated from each other, while containers within a Pod share the same ne...read more
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Q3. Service discovery
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Q4. Multi threading
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Solution design for heavy input applications

Q1. Why are you leaving current organization
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Q2. What are your expectations
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Q1. What is async/await
Ans. 
Async/await is a feature in JavaScript that allows for asynchronous programming using promises.
• Async/await is a syntactic sugar built on top of promises in JavaScript.

• It allows for writing asynchronous code that looks synchronous, making it easier to read and maintain.

• The 'async' keyword is used to define a function as asynchronous, while 'await' is used to pause the execution of the function until a promise is settled...read more
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Q2. What how closure work
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Closures are functions that have access to variables from their containing scope even after the scope has closed.
• Closures allow functions to maintain access to variables from their parent scope even after the parent function has finished executing.

• Closures are created when a function is defined within another function and the inner function references variables from the outer function.

• Closures are commonly used in even...read more
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Basic math questions puzzles

Prepare dsa graph trees