20+ Cleanfix-Schevaran Systems Interview Questions and Answers

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs allows for better organization and structure of code

• It promotes code reusability and modularity

• It provides encapsulation, inheritance, and polymorphism

• Examples of OOPs languages include Java, C++, and Python

A program to check whether a string is a palindrome or not.

• A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward.

• To check if a string is a palindrome, we can compare the characters from the beginning and end of the string.

• If the characters match for all positions, the string is a palindrome.

• We can ignore spaces, punctuation, and letter case when checking for palindromes.

A program to convert number to string using an array of strings.

• Create an array of strings to represent each digit

• Use modulo operator to extract each digit from the number

• Map each digit to its corresponding string representation

• Join the string representations of each digit to form the final string

Reverse a given string and find unique values in an array of strings.

• Use the reverse() method to reverse the given string.

• Use a Set to store unique values in the array.

• Loop through the array and add each element to the Set.

• Convert the Set back to an array to get the unique values.

Angular is a full-fledged framework while React is a library. Angular uses TypeScript while React uses JavaScript.

• Angular is a complete framework with a lot of built-in features while React is a library that only handles the view layer.

• Angular uses TypeScript, which is a superset of JavaScript, while React uses plain JavaScript.

• Angular has a steeper learning curve but provides more structure and organization while React is easier to learn and more flexible.

• Angular has a large...read more

Pipes, directives, and routing are key features of Angular for data manipulation, component rendering, and navigation.

• Pipes are used for transforming data in templates, such as formatting dates or currency

• Directives are used for manipulating the DOM, such as hiding or showing elements based on conditions

• Routing is used for navigating between different components and views based on URLs

• Angular provides built-in pipes and directives, but custom ones can also be created

• Routing c...read more

Psuedo code output and technical MCQs for Software Engineer Intern position

• Provide examples for technical MCQs

• Psuedo code output needs to be calculated

• Assess candidate's technical knowledge

Measuring, optimizing, and monitoring ML model pipeline in cloud involves tracking performance metrics, tuning hyperparameters, and setting up alerts.

• Track performance metrics such as accuracy, precision, recall, and F1 score to evaluate model performance.

• Optimize hyperparameters using techniques like grid search, random search, or Bayesian optimization to improve model accuracy.

• Set up monitoring tools like CloudWatch or Prometheus to track model performance in real-time and ...read more

I have used Convolutional Neural Networks (CNN) for cloud based image data.

• Utilized CNN for image classification and object detection tasks

• Implemented transfer learning with pre-trained CNN models like VGG, ResNet, or Inception

• Used data augmentation techniques to improve model performance

Ajax calls allow for asynchronous communication between client and server without reloading the entire page.

• Ajax stands for Asynchronous JavaScript and XML

• Used to update parts of a web page without reloading the entire page

• Can be used to retrieve data from a server and display it on a web page

• Can be used to send data to a server without reloading the entire page

• Uses XMLHttpRequest object to send and receive data

Function to create a Linked List

• Create a Node class with value and next pointer

• Create a LinkedList class with head pointer

• Add nodes to the linked list using the LinkedList class

• Handle edge cases like empty list and inserting at head

A recommender system is a type of information filtering system that predicts the preferences or ratings a user would give to items.

• Recommender systems are commonly used in e-commerce websites to suggest products based on user behavior.

• They can be content-based, collaborative filtering, or hybrid systems.

• Examples include Netflix recommending movies based on viewing history, Amazon suggesting products based on purchase history.

Bayesian statistics is a method of statistical inference in which Bayes' theorem is used to update the probability of a hypothesis as more evidence or information becomes available.

• Bayesian statistics involves updating prior beliefs with new evidence to form posterior beliefs.

• It allows for the incorporation of prior knowledge into the analysis.

• Bayesian statistics is particularly useful in situations with limited data or when making predictions about future events.

• Examples inc...read more

Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.

• The first two numbers of the series are 0 and 1.

• The next number is found by adding up the two numbers before it.

• The sequence goes on infinitely.

• Example: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811, 514229, 832040, 1346269, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, ...read more

Program to generate Fibonacci series

• Declare variables to store the first two numbers of the series

• Use a loop to generate the subsequent numbers of the series

• Add the previous two numbers to get the next number in the series

• Print the series or store it in an array

A Java program using arrays of strings.

• Declare an array of strings: String[] arrayName = new String[size];

• Initialize array elements: arrayName[index] = "value";

• Access array elements using index: String element = arrayName[index];

Properties of material refer to characteristics such as density, hardness, conductivity, and flexibility.

• Density: mass per unit volume (e.g. lead is denser than aluminum)

• Hardness: resistance to scratching or indentation (e.g. diamond is harder than graphite)

• Conductivity: ability to conduct heat or electricity (e.g. copper is a good conductor)

• Flexibility: ability to bend without breaking (e.g. rubber is flexible)

High level architectural designs involve creating a blueprint for the overall structure of a software system.

• Identify key components and their interactions

• Define the overall structure and relationships between components

• Consider scalability, performance, security, and maintainability

• Choose appropriate technologies and frameworks

• Create diagrams like UML or flowcharts to visualize the architecture

SQL query to retrieve all employees from a specific department

• Use SELECT statement to retrieve data

• Specify the columns to be selected

• Use WHERE clause to filter by department