DigiHelic Sfdc Developer Interview Questions and Answers

The first round comprised of 4 sections online questions including aptitude, logical, Coding questions, and technical portions (Test Duration: 90 mins):

Debugging: We had to choose a language and debug up to 7 questions most probably. Codes were very basic like sorting, etc. I completed 6 of them.

Coding: There were two medium-hard level questions.

Work-style Assessment: Just try to answer as an ideal employee. Make sure you answers don’t contradict each other.

Aptitude: Around 25 questions.

Q1. Find diameter of tree
Add your answer
Q2. Count inversion
Add your answer

Q1. Find n’th node from the end of a Linked List
Add your answer
Q2. Find shortest distance between 2 points in a matrix, where 2 points can be anywhere
Add your answer

Trips for cracking interview

Q1. For example how to replay for all questions
Add your answer
Q2. Different questions for all types
Add your answer
Q3. Interviews easily cracking trips
Add your answer
Q4. How to get good job in software
Add your answer
Q5. How to get job
Add your answer

Q1. Hoisting concept with examples and guess the output
Add your answer
Q2. Map functionality with a call back function
Add your answer
Q3. Copy object, spread operator usage . Deep copy, sallow copy
Add your answer
Q4. Flexbox vs grid, dom, box model,
Add your answer
Q5. React optimization, why React,
Add your answer

Q1. Why did you choose the flask over the django and fastapi?
Ans. 
I chose Flask over Django and FastAPI due to its simplicity, flexibility, and ease of use for smaller projects.
• Flask is lightweight and minimalistic, making it easier to set up and use for smaller projects.

• Flask allows for more flexibility in terms of project structure and customization compared to Django.

• Flask is well-suited for rapid prototyping and smaller applications where simplicity is key.

• Django, on the other ha...read more
Answered by AI
Add your answer
Q2. Write the code for flask request and response block?
Ans. 
Flask request and response block code snippet
• Use Flask's request object to access incoming request data

• Use Flask's jsonify function to create a JSON response

• Handle different HTTP methods like GET, POST, etc. in the route function
Answered by AI
Add your answer

Q1. What is ORM? which ORM tool, have you used?
Ans. 
ORM stands for Object-Relational Mapping, a programming technique for converting data between incompatible type systems in object-oriented programming languages.
• ORM is used to map objects from an application to tables in a relational database.

• It simplifies data manipulation by allowing developers to work with objects instead of SQL queries.

• Popular ORM tools include Hibernate for Java, Entity Framework for .NET, and Seq
Answered by AI
Add your answer
Q2. Write ORM code for select item from table?
Ans. 
Use ORM code to select item from a table in database.
• Use ORM query methods like find(), findOne(), or where() to select items from a table.

• Specify the table name and any conditions for the selection.

• Example: User.find({ where: { id: 1 } }) will select a user with id 1 from the User table.
Answered by AI
Add your answer

General aptitude, computer science fundamentals multiple-choice questions, and data structures and algorithms multiple-choice questions were asked.

Q1. Given a string, write a function to reverse the string.
Ans. 
Function to reverse a given string
• Create an empty string to store the reversed string

• Iterate through the input string in reverse order and append each character to the new string

• Return the reversed string
Answered by AI
Add your answer
Q2. Given a sorted array of integers, write a function to perform a binary search to find the index of a target value. If the target value is not found, return -1.
Ans. 
Binary search function to find target value in sorted array
• Define function that takes sorted array and target value as input

• Initialize variables for start, end, and middle indices

• Use while loop to iterate until start is less than or equal to end
Answered by AI
Add your answer

Q1. About the company
Add your answer
Q2. What are three significant achievements in your life?
Ans. 
Graduating with honors, winning a hackathon, volunteering in a developing country
• Graduated with honors from university with a degree in Computer Science

• Won first place in a hackathon competition by developing a unique and innovative software solution

• Volunteered in a developing country to help build schools and provide education to underprivileged children
Answered by AI
Add your answer

Q1. Project related question , Interface , Abstraction
Add your answer

Q1. Scenario based question
Add your answer

Q1. Salary Discussioon
Add your answer

Q1. Angular routing
Add your answer
Q2. What are pipes in angular
Ans. 
Pipes in Angular are used for transforming data in templates.
• Pipes are used to format data before displaying it in the view

• They can be used to filter, sort, or transform data in various ways

• Examples include date pipe, currency pipe, and uppercase/lowercase pipe
Answered by AI
Add your answer

Q1. Which version of java you use?
Ans. 
I use Java version 8 for Angular development.
• I use Java 8 for its compatibility with Angular frameworks and libraries.

• Java 8 introduced features like lambda expressions and streams which are useful in Angular development.

• Example: I use Java 8 to write backend services for my Angular applications.
Answered by AI
Add your answer
Q2. What are the new features in java 8?
Ans. 
Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to write code in a more concise and readable way.

• Functional interfaces provide a way to define interfaces with a single abstract method.

• Streams allow you to process collections of objects in a functional style.

• Default methods allow you to add new methods to interfaces wit
Answered by AI
Add your answer

Q1. Mostly js questions, not so many of angular or react.
Add your answer
Q2. Like fizbuzz or things like that.
Add your answer