10+ Associate Software Engineer Trainee Interview Questions and Answers

Program to demonstrate method overloading and overriding

• Method overloading is when multiple methods have the same name but different parameters

• Method overriding is when a subclass provides its own implementation of a method already defined in the superclass

• Method overloading is resolved at compile-time while method overriding is resolved at runtime

The query to get the second highest salary in a given table.

• Use the SELECT statement to retrieve the salary column from the table.

• Sort the salaries in descending order using the ORDER BY clause.

• Use the LIMIT clause to limit the result to the second row.

• Finally, retrieve the second highest salary from the result.

AWS provides various services including compute, storage, database, networking, analytics, machine learning, and more.

• Compute: EC2, Lambda

• Storage: S3, EBS

• Database: RDS, DynamoDB

• Networking: VPC, Route 53

• Analytics: Athena, EMR

• Machine Learning: SageMaker, Rekognition

• Example: I have used EC2 to host a web application and S3 to store static files.

Call by reference and call by value are two ways of passing arguments to a function.

• Call by value passes a copy of the argument to the function, while call by reference passes a reference to the original argument.

• In call by value, changes made to the argument inside the function do not affect the original value, while in call by reference, changes made to the argument inside the function affect the original value.

• Call by value is used for simple data types like integers and f...read more

Simulate smashing monsters with powers until only one remains.

• Create a max heap to store the powers of monsters.

• Repeatedly smash the two monsters with the highest powers until only one remains.

• Return the power of the last remaining monster.

Data structures are ways to organize and store data efficiently.

• Data structures are used to store and manipulate data in a structured manner.

• They can be classified into linear and non-linear data structures.

• Examples of data structures include arrays, linked lists, stacks, queues, trees, and graphs.

Program to sort an array of strings

• Use built-in sort function

• Implement bubble sort or insertion sort

• Consider time complexity

Lambda expression is an anonymous function that can be passed as an argument or returned as a value.

• Lambda expressions are used in functional programming languages like Java, Python, and C#.

• They are often used to simplify code and make it more concise.

• Lambda expressions can be used to implement functional interfaces, which have a single abstract method.

• Lambda expressions can also be used with streams to perform operations on collections of data.

• Example: (x, y) -> x + y is a l...read more

Pointers are variables that store memory addresses of other variables.

• Pointers allow direct access to memory locations.

• They can be used to pass values between functions.

• Pointers can be used to create dynamic data structures.

• Example: int *ptr; ptr = # *ptr = 10;

• Example: void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; }

Designing a full stack website involves creating both front-end and back-end components to provide a complete user experience.

• Identify the requirements and functionalities of the website

• Design the user interface using HTML, CSS, and JavaScript

• Develop the back-end using a server-side language like Node.js or Python

• Implement a database to store and retrieve data

• Test the website for functionality and user experience

• Deploy the website on a hosting platform like AWS or Heroku

Arrays are a collection of similar data types stored in contiguous memory locations.

• Arrays can be of any data type, including integers, floats, characters, and objects.

• Arrays are accessed using an index starting from 0.

• Arrays can be one-dimensional, two-dimensional, or multi-dimensional.

• Example: int arr[5] = {1, 2, 3, 4, 5};

• Example: char str[6] = {'H', 'e', 'l', 'l', 'o', '\0'};

Processes are independent instances of a program, while threads are smaller units within a process that can run concurrently.

• Processes have their own memory space, while threads share memory within a process.

• Processes are heavyweight, while threads are lightweight.

• Processes communicate with each other through inter-process communication mechanisms, while threads can communicate directly.

• Example: A web browser running multiple tabs is a process, and each tab running JavaScript...read more