R A Consulting Services Zambia Limited Interview Questions and Answers

Reasoning and aptitude questions are given

Q1. Tell all concepts of Overloading
Ans. 
Overloading is a concept in programming where multiple functions can have the same name but different parameters.
• Functions with the same name but different parameters can be defined in a class

• Overloading allows for flexibility in function usage

• Example: void print(int num) and void print(string text) are overloaded functions
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Q2. Tell me about a live example of inheritance
Ans. 
Inheritance in software development allows a class to inherit properties and behaviors from another class.
• Inheritance allows a subclass to reuse code from a superclass

• Subclass can also add new functionalities or override existing ones

• Example: Animal class can be a superclass with properties like name and age, while Dog class can inherit from Animal and add a method bark()
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Q1. Tell about the your self
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I was asked t solve 2 coding questions got 20 minutes for each, both were on DS and Algo moderate problems. 1 on trees and second on linked list.

Q1. System design round where i was asked to design a parking lot followed by few DB questions
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Q1. Then there was a UI round where i had to answer few Typescript questions and then was given a case study which i had t solve and propose a UI/UX solution.
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Q1. What is the difference between working from home and working from the office, and what are the benefits of each?
Ans. 
Working from home offers flexibility and comfort, while working from the office provides structure and social interaction.
• Working from home allows for flexibility in schedule and eliminates commute time.

• Working from the office provides a structured environment and opportunities for in-person collaboration.

• Benefits of working from home include increased productivity and work-life balance.

• Benefits of working from the off...read more
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Q1. All Programing ques
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Used an online IDE and asked general DS Algo questions

Q1. System Design HLD question to make URL shortener
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Q1. General HR Aptitude questions
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Online assessment with quantitative and qualitative questions

Some Tree traversal coding question

Q1. Load balancer design question
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Q2. Technical challenges faced
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Leetcode easy level questions

Q1. Eliminate subsequent repetitions in a string
Ans. 
Remove subsequent repetitions in a string
• Iterate through the string and compare each character with the next one

• If they are the same, remove the repetition by shifting the characters to the left

• Repeat this process until all repetitions are eliminated
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Q1. Behavioral questions asked by Delivery Manager
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Q1. Behavioral round and past experience
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Q1. Design a URL shortener
Ans. 
A URL shortener is a tool that takes a long URL and generates a shorter, more manageable link.
• Generate a unique short code for each long URL

• Store the mapping between short code and long URL in a database

• Redirect users from short URL to original long URL when accessed
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Q2. Write unit test for a sevice class
Ans. 
Unit test for a service class
• Create a test class for the service class

• Mock any dependencies of the service class

• Write test methods to cover different scenarios

• Use assertions to verify the expected outcomes
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2 DSA question was asked

40 questions in 20 minutes

Q1. Stones games 2 leetcode
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Q2. Permutations of array
Ans. 
Generate all possible permutations of an array of strings
• Use recursion to generate permutations

• Swap elements to create different permutations

• Base case: when array size is 1, return array as permutation
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Q1. Project discussion
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