Vistex Asia Pacific Junior Developer Interview Questions and Answers

Q1. Solid principles in c#
Ans. 
Solid principles are a set of design principles for writing maintainable and scalable code in C#.
• Single Responsibility Principle (SRP) - a class should have only one reason to change

• Open/Closed Principle (OCP) - a class should be open for extension but closed for modification

• Liskov Substitution Principle (LSP) - derived classes should be substitutable for their base classes

• Interface Segregation Principle (ISP) - client...read more
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Easy logical questions
basic quant

Easy level coding questions
Counting frequency of alphabets

Round duration - 30 Minutes
Round difficulty - Easy

The questions ranged from prime number concepts to one question on linked list.

Q1. 
Prime Time Again Problem Statement
You are given two integers DAY_HOURS and PARTS. Consider a day with DAY_HOURS hours, which can be divided into PARTS equal parts. Your task is to determine the total ins...read more
Ans. 
Given DAY_HOURS and PARTS, find total instances of equivalent prime groups in a day divided into equal parts.
• Divide the day into equal parts and check for prime groups at the same position in different parts.

• Each prime group consists of prime numbers occurring at the same position in different parts.

• Return the total number of equivalent prime groups found.

• Ensure DAY_HOURS is divisible by PARTS and each hour in a prime
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Q2. 
Add Two Numbers Represented as Linked Lists
Given two linked lists representing two non-negative integers, where the digits are stored in reverse order (i.e., starting from the least significant digit to ...read more
Ans. 
Add two numbers represented as linked lists in reverse order and return the sum as a linked list.
• Traverse both linked lists simultaneously, adding corresponding digits and carrying over if necessary.

• Handle cases where one list is longer than the other by considering carry over.

• Create a new linked list to store the sum digits in reverse order.

• Return the head of the new linked list as the result.
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