Crimson Interactive Software Trainee Interview Questions and Answers

Question on Linked list. array and string manipulation.

Questions of quant and coding

Q1. Program to find duplicate
Ans. 
Program to find duplicate strings in an array
• Iterate through the array and store each string in a HashSet

• If a string is already in the HashSet, it is a duplicate

• Return a list of all duplicate strings found
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Q2. Java concepts and oops
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Q1. Managerial questions about project and stuff
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Q1. Salary discussion and company policies
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Nice,,,i like the interview process...

I like the interview process...

Nice i like the interview process...
..

Q1. About our academics project
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Q2. About recent technologies
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2 Graph question of leetcode

Q1. DSA Questions of leetcode
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Q2. DSA Questions
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Q1. What is closure
Ans. 
A closure is a function that has access to its own scope, the scope in which it was defined, and the global scope.
• A closure is created when a function is defined inside another function.

• The inner function has access to the variables and parameters of the outer function, even after the outer function has finished executing.

• Closures are useful for creating private variables and functions in JavaScript.

• They can also be us...read more
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Q2. What is Encapsulation
Ans. 
Encapsulation is the process of hiding internal details and providing a public interface for accessing and manipulating data.
• Encapsulation bundles data and methods together into a single unit.

• It helps in achieving data abstraction and data hiding.

• By encapsulating data, we can control access to it and prevent unauthorized modifications.

• Encapsulation promotes code reusability and maintainability.

• Example: A class in objec...read more
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Q3. What is Inheritance
Ans. 
Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows for code reuse and promotes the concept of hierarchy.

• The class that is being inherited from is called the superclass or base class.

• The class that inherits from the superclass is called the subclass or derived class.

• The subclass can access the public and protected members of the s...read more
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Q4. What is Abstraction
Ans. 
Abstraction is the process of simplifying complex systems by focusing on essential details.
• Abstraction involves hiding unnecessary details and exposing only relevant information.

• It allows developers to create models or representations that capture the essential aspects of a system.

• Abstraction helps in managing complexity, improving code reusability, and enhancing maintainability.

• For example, in object-oriented programm...read more
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Q5. What is Polymorphism
Ans. 
Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as the same type.
• Polymorphism is a fundamental concept in object-oriented programming.

• It enables code reusability and flexibility.

• Polymorphism can be achieved through method overriding and method overloading.

• Example: A parent class Animal can have multiple child classes like Dog, Cat, and Bird. They can ...read more
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Q1. What are services in Drupal?
Ans. 
Services in Drupal are reusable objects that perform specific functions, such as database queries or sending emails.
• Services are defined in YAML files and can be accessed throughout a Drupal site.

• They are used to encapsulate reusable functionality and promote code reusability.

• Examples of services in Drupal include the database service for interacting with the database, the mail service for sending emails, and the logge
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Q2. How to debug in Drupal?
Ans. 
Debugging in Drupal involves using tools like Devel module, watchdog(), and error logs.
• Enable Devel module for debugging information

• Use watchdog() function to log messages to Drupal's watchdog log

• Check error logs for PHP errors and warnings

• Use dpm() function to print variables for debugging purposes
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Aptitude and coding questions both were included

Q1. Patterns ans series questions were asked
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Q2. Data types in Javascript
Ans. 
Javascript has various data types including string, number, boolean, object, array, null, and undefined.
• Data types in Javascript include string, number, boolean, object, array, null, and undefined.

• Strings are sequences of characters enclosed in quotes.

• Numbers can be integers or floating-point numbers.

• Booleans represent true or false values.

• Objects are collections of key-value pairs.

• Arrays are ordered collections of val...read more
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Q3. Difference between let and var
Ans. 
let is block scoped while var is function scoped in JavaScript.
• let was introduced in ES6 while var has been around since the beginning of JavaScript.

• Variables declared with let are only accessible within the block they are declared in.

• Variables declared with var are accessible throughout the function they are declared in.

• Using let can help prevent variable hoisting issues.

• let is preferred over var for variable declarat
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Q1. Salary discussion
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Round duration - 120 minutes
Round difficulty - Easy

Timing was 9: 30 AM. Platform was quite good and easy to understand.

Q1. 
Reverse Only Letters Problem Statement
You are given a string S. The task is to reverse the letters of the string while keeping non-alphabet characters in their original position.
Example:
Input:
S = "...read more
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Q2. 
Find the Duplicate Number Problem Statement
Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Yo...read more
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Q3. 
Reverse Array Elements
Given an array containing 'N' elements, the task is to reverse the order of all array elements and display the reversed array.
Explanation:
The elements of the given array need to...read more
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Q4. 
Sum of Digits Problem Statement
Given an integer 'N', continue summing its digits until the result is a single-digit number. Your task is to determine the final value of 'N' after applying this operation ...read more
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Round duration - 30 minutes
Round difficulty - Easy

Timing was 9:30 AM. The interviewer was very nice.

Q1. 
Nth Fibonacci Number Problem Statement
Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2), with initial conditions F(1) = F(2) = 1.
Input:
...read more
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Q2. Write an SQL query to find the second highest salary from a table.
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Round duration - 30 minutes
Round difficulty - Medium

Timing was 12 PM. Interviewer was not good.

Q1. 
Character Frequency Problem Statement
You are given a string 'S' of length 'N'. Your task is to find the frequency of each character from 'a' to 'z' in the string.
Example:
Input:
S : abcdg
Output:
1...read more
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Q2. What is normalization and can you explain the concept of Third Normal Form (3NF)?
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