WASP3D Associate Software Engineer Interview Questions and Answers

Aptitude Question on various standard topics .

Q1. Application of stack in real life.
Ans. 
Stacks are used in real life for managing undo operations in text editors, backtracking in maze solving, and managing function calls in programming.
• Undo operations in text editors - allows users to go back to previous states of a document

• Backtracking in maze solving - helps in keeping track of visited paths and backtracking when necessary

• Managing function calls in programming - helps in keeping track of function calls
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Q2. Difference between i++ and ++i through implementation.
Ans. 
i++ and ++i are both increment operators in C++ but have different behaviors.
• i++ is a post-increment operator which increments the value of i after using it in an expression.

• ++i is a pre-increment operator which increments the value of i before using it in an expression.

• Example: int i = 5; int a = i++; // a = 5, i = 6; int b = ++i; // b = 7, i = 7;
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Q1. About your intro and family background.
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Q1. How does recyclerview works internally ?
Ans. 
RecyclerView is a flexible view for providing a limited window into a large data set.
• RecyclerView recycles views to improve performance and memory usage.

• It uses LayoutManager to organize items in a grid, list, or staggered grid layout.

• Adapter provides data to be displayed in RecyclerView.

• ItemDecoration can be used to add spacing between items or decorations to items.

• ItemAnimator can be used to animate item changes in t
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Q2. Android basics , Live Data , ViewModel, coroutines internal working
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It was quite easy, all the questions were from leetcode

Round duration - 90 minutes
Round difficulty - Medium

It was an MCQ + coding based round consisting of multiple choice questions from topics like Aptitude, Logical reasoning, English, Programming ,etc. and 2 coding problems

Q1. 
Prime Numbers within a Range
Given an integer N, determine and print all the prime numbers between 2 and N, inclusive.
Input:
Integer N
Output:
Prime numbers printed on separate lines
Example:
Input...read more
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Q2. 
Print All Permutations of a String
Given an input string STR, generate and print all possible permutations of the string.
Input:
str
Output:
All permutations of the input string, each on a new line.
...read more
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Round duration - 75 minutes
Round difficulty - Medium

There were 2 interviewers. Firstly, they asked me to give my introduction. Then they asked me to explain any one of my projects in detail along with its demonstration. After this, they began with the DSA and computer fundamentals part.

Q1. 
Find All Pairs Adding Up to Target
Given an array of integers ARR of length N and an integer Target, your task is to return all pairs of elements such that they add up to the Target.
Input:
The first line ...read more
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Q2. 
Queue Using Stacks Implementation
Design a queue data structure following the FIFO (First In First Out) principle using only stack instances.
Explanation:
Your task is to complete predefined functions t...read more
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Q3. 
Swap Kth Elements in an Array
Given an array ARR of size N, perform the operation to swap the Kth element from the beginning with the Kth element from the end of the array.
Example:
Input:
N = 5, K = 2
...read more
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Round duration - 60 minutes
Round difficulty - Medium

This round had questions related to aptitude and coding

Q1. 
Find Duplicates in an Array Problem Statement
You are provided with an array/list ARR of size 'N', containing integers ranging from 0 to N - 1. Some elements in this array might be repeating. Your task is...read more
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Round duration - 60 minutes
Round difficulty - Medium

This round had some questions from OOPS and some from DBMS

Q1. What is compile-time polymorphism, and how does it differ from runtime polymorphism?
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Q2. What are the ACID properties in DBMS?
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Q3. What are the various types of inheritance in Object-Oriented Programming?
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Round duration - 30 minutes
Round difficulty - Easy

This was my last round and I hoped it to go good just like the other rounds. The interviewer was very straight to the point and professional. The interview lasted for 30 minutes.

Q1. What is something about you that is not included in your resume?
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AI

C#

Q1. Basic concepts of OOPS, web development, some easy-medium level coding questions. Your projects and aspirations.
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Q2. Theoretical concepts of DBMS, OS & Computer Network, basic SQL queries.
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Q1. Why should we hire you?
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Q2. What are your strengths and weaknesses?
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Q3. Tell me about yourself.
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