Happiest Minds Technologies Senior Software Development Engineer Interview Questions and Answers

Q1. What is chop and chomp?
Ans. 
chop and chomp are string manipulation functions in programming languages.
• chop removes the last character from a string

• chomp removes the newline character from the end of a string

• Both functions are commonly used in languages like Perl and Ruby
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Q1. Js basic questions
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Q2. Angular questio s
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Q1. Implement LinkedList and insert element at last
Ans. 
Implement LinkedList and insert element at last
• Create a Node class with data and next pointer

• Create a LinkedList class with head and tail pointers

• Implement a method in LinkedList class to insert element at the end
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Arrays questions medium and easy

Q1. Thinking abilities
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Q1. Basic conversation
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HackerRankTest : Q1-Farthest element in an array
Q2-midian of subarray

Q1. Q1- Split the array size
Ans. 
Split the array size
• Use the split() method to split the array into smaller arrays

• Specify the size of each smaller array

• Handle any remaining elements if the original array size is not divisible by the specified size
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Q2. Q2-card based problem
Ans. 
Implement a card-based problem solution
• Use arrays to represent the cards and their values

• Consider different operations like shuffling, sorting, dealing

• Implement algorithms for efficient card manipulation
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First round was aptitude and coding test in which you'll be asked questions on quantitative aptitude, logical and verbal ability and 3 programming questions.

Q1. Tell me about yourself
Ans. 
I am a software developer with experience in multiple programming languages and a passion for problem-solving.
• Experienced in Java, C++, and Python

• Strong understanding of data structures and algorithms

• Worked on various projects including web development and mobile app development

• Excellent problem-solving and analytical skills
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Q2. How will you use your skills and certifications in Prodapt?
Ans. 
I will utilize my skills and certifications in Prodapt to develop high-quality software solutions.
• I will leverage my programming skills to write clean and efficient code.

• I will apply my knowledge of software development methodologies to ensure the delivery of reliable and scalable solutions.

• I will utilize my certifications in relevant technologies to stay updated with the latest industry trends and best practices.

• I wil...read more
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Q3. Are you okay with signing a service bond for 18 months?
Ans. 
Yes, I am okay with signing a service bond for 18 months.
• Signing a service bond is a common practice in the software industry.

• It ensures commitment and stability from both the employer and employee.

• By signing the bond, I am willing to stay with the company for the specified duration.

• It also shows my dedication and willingness to contribute to the organization's success.

• I understand that breaking the bond may have legal
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Q1. Write a program to sort an array
Ans. 
Program to sort an array of strings
• Use built-in sorting functions

• Implement sorting algorithms like bubble sort, merge sort, quick sort

• Consider time and space complexity
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Q2. Write a program to print pattern
Ans. 
Program to print a pattern using an array of strings
• Create an array of strings to hold the pattern

• Use loops to fill the array with the desired pattern

• Print the array to display the pattern
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Q3. 1. One logical question 2. What is data structures 3. Explain array indexing 4. What is the best algorithm for sorting. 5. Simple questions on the projects I had mentioned in my resume.
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Q4. 3 basic questions on SQL. 1. How will you modify something in a table? 2. Explain primary, secondary and foreign keys. 3. Write a query for inserting a record in a table.
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Round duration - 60 minutes
Round difficulty - Medium

Mcq + Data structures questions

Q1. Maximum sum subarray
Given an array of numbers, find the maximum sum of any contiguous subarray of the array.
For example, given the array [34, -50, 42, 14, -5, 86], the maximum sum would be 137, since w...read more
Ans. Brute Force Approach
1. Create a nested loop. The outer loop will go from i = 0 to i = n - k. This will cover the starting indices of all k-subarrays
2. The inner loop will go from j = i to j = i + k - 1. This will cover all the elements of the k-subarray starting from index i
3. Keep track of the maximum element in the inner loop and print it.
Space Complexity: O(1)Explanation:
O(1) because the extra space being used (looping vari...read more
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Round duration - 70 minutes
Round difficulty - Medium

Standard System Design round

Q1. System Design Question
Design a Doctor Appointment System with some testcases
Ans. 
Tip 1 : Implement using OOPs 
Tip 2 : Try to tell your approach to the interviewer as much as you can side by side
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Round duration - 90 minutes
Round difficulty - Medium

Interview of DSA + OOPS + Databse(SQL query) + Operating System

Q1. Left View Of Binary Tree
Given a binary tree. Print the Left View of the Tree.
Example :
If the input tree is as depicted in the picture: 
The Left View of the tree will be:  2 35 2 
Input format :
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Ans. Recursive Approach
This problem can be solved through recursion.We will maintain max_level variable which will keep track of maxLevel and will pass current level in recursion as argument. Whenever we see a node whose current level is more than maxLevel then we will print that node as that will be first node for that current level. Also update maxLevel with current level.
Space Complexity: O(n)Explanation:
O(N), where ‘N’...read more
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Q2. SQL Question
What is the difference between CHAR and VARCHAR2 datatype in SQL? 
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Q3. SQL Question
Write an SQL query to find names of employees starting with ‘A’? 
 
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Q4. OOPS Question
What are the various types of constructors in C++?
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Q5. OOPS Question
What is the difference between overloading and overriding?
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Q6. Operating System Question
What is a process? What are the different states of a process?
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Q7. Operating System Question
What is IPC? What are the different IPC mechanisms?
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Round duration - 60 minutes
Round difficulty - Easy

Hr round - normal hr questions + situational 

Thoughtworks community discussion

Q1. Basic HR Question
Why should we hire you?
Ans. 
Tip 1 : Read all Thoughtworks community page and be honest

Tip 2 : Be open-minded and answer whatever you are thinking, in these rounds I feel it is important to have opinion.

Tip 3 : The cross-questioning can go intense sometimes, think before you speak.
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