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Bounteous x Accolite Interview Questions and Answers
186 Interview questions
To find the first non-repeating character, traverse the string and track character counts, returning the first with a count of one.
Count Characters: Use a hash map or dictionary to count occurrences of each character in the string.
Traverse String: Iterate through the string again to find the first character with a count of one.
Example: For the string 'swiss', the counts are {'s': 3, 'w': 1, 'i': 1}. The first non-...
A steady string contains characters B, D, U, and H, each appearing exactly n/4 times, where n is the string length.
Character Count: Count occurrences of B, D, U, and H in the string.
Length Check: Ensure the string length is divisible by 4 for steady condition.
Example 1: 'HBDU' has 1 of each character, steady since length is 4.
Example 2: 'BBUDHUDH' has 2 B's, 2 D's, 2 U's, and 2 H's, steady since length is 8.
Exampl...
Left rotating a binary tree involves shifting nodes to the left, changing the structure while maintaining the tree's properties.
Definition: A left rotation on a binary tree involves moving the right child of a node to become the new root of that subtree.
Example: For a node with value 10, if it has a right child 15, after left rotation, 15 becomes the new root, and 10 becomes the left child of 15.
Implementation: Th...
Implement a stack using two queues to achieve LIFO behavior.
Use two queues: queue1 and queue2.
For push operation, enqueue the element in queue1.
For pop operation, dequeue all elements from queue1 to queue2 except the last one, then dequeue the last element from queue1.
Swap the names of queue1 and queue2 after pop operation to maintain the stack structure.
Example: Push(1), Push(2), Pop() returns 2, Push(3), Pop() r...
Convert a string into a zigzag pattern on a given number of rows and read line by line.
The zigzag pattern is formed by writing characters diagonally down and up across multiple rows.
For example, with 3 rows and the string 'PAYPALISHIRING', the pattern looks like: P A H N A P L S I I G Y I A
To construct the result, iterate through the string and place characters in the appropriate row based on the current...
Implement strategies to minimize collisions in HashMap for better performance and efficiency.
Use a better hash function: A well-distributed hash function reduces clustering. Example: Use prime numbers in calculations.
Increase the initial capacity: Start with a larger size to minimize resizing and collisions. Example: Set initial capacity to 16 instead of 8.
Utilize linked lists or trees: In case of collisions, stor...
I primarily use Git for version control, utilizing branches, commits, and merges for collaboration and tracking changes.
Primary version control tool is Git
Utilize branches for different features or fixes
Regularly commit changes with descriptive messages
Merge branches to integrate changes
Use tools like GitHub or Bitbucket for collaboration
The Bash command to suppress all output and errors is 'command > /dev/null 2>&1'
Use '>' to redirect standard output to /dev/null
Use '2>&1' to redirect standard error to standard output
Combine both to suppress all output and errors: 'command > /dev/null 2>&1'
SQL query to join two tables, use aggregate functions like SUM and AVG with GROUP BY
Use JOIN keyword to combine two tables based on a common column
Use GROUP BY clause to group the results based on a specific column
Use aggregate functions like SUM() and AVG() to calculate totals and averages within each group
The process for writing a Bash script to read and parse a CSV file and print the last character of each line involves using a combination of commands and loops.
Use the 'while read' loop to read each line of the CSV file
Use 'awk' command to extract the last character of each line
Print the last character using 'echo' command
Bounteous x Accolite Interview Experiences
230 interviews found
Anonymous
Selected
I appeared for an interview in Dec 2024.
(3 Questions)
- Q1. What is the Look and Say sequence, and how can a program be written to generate the next number in this sequence?
- Ans.
Look and Say sequence is a sequence of numbers where each term is formed by describing the previous term.
Start with the number 1
Read off the digits of the previous number, counting the number of digits in groups of the same digit
For example, starting with 1, the sequence would be: 1, 11, 21, 1211, 111221, ...
- Q2. What is the SQL query to perform a join on two tables and calculate the aggregate sum using the product ID?
- Ans.
SQL query to perform a join on two tables and calculate aggregate sum using product ID.
Use JOIN keyword to combine two tables based on a related column (e.g. product ID)
Use GROUP BY clause to group the results by product ID
Use SUM() function to calculate the aggregate sum of a column (e.g. price)
- Q3. What is the process for writing a Bash script to read and parse a CSV file and print the last character of each line?
- Ans.
The process for writing a Bash script to read and parse a CSV file and print the last character of each line involves using a combination of commands and loops.
Use the 'while read' loop to read each line of the CSV file
Use 'awk' command to extract the last character of each line
Print the last character using 'echo' command
Platform: Coderbyte Test. The process is similar to the technical round, except that in the last bash script question, instead of printing the last character, print the third last character of each line.
(5 Questions)
- Q1. Can you tell me about yourself?
- Q2. What are the principles of Continuous Integration and Continuous Deployment (CI/CD)?
- Ans.
CI/CD is a software development practice where code changes are automatically built, tested, and deployed frequently.
Continuous Integration (CI) involves automatically integrating code changes into a shared repository multiple times a day.
Continuous Deployment (CD) involves automatically deploying code changes to production after passing automated tests.
CI/CD helps in detecting and fixing integration errors early, ensu...
- Q3. What version control tools do you use, and can you explain how you utilize them?
- Ans.
I primarily use Git for version control, utilizing branches, commits, and merges for collaboration and tracking changes.
Primary version control tool is Git
Utilize branches for different features or fixes
Regularly commit changes with descriptive messages
Merge branches to integrate changes
Use tools like GitHub or Bitbucket for collaboration
- Q4. What is the SQL query to join two tables and use aggregate functions such as SUM and AVG with GROUP BY?
- Ans.
SQL query to join two tables, use aggregate functions like SUM and AVG with GROUP BY
Use JOIN keyword to combine two tables based on a common column
Use GROUP BY clause to group the results based on a specific column
Use aggregate functions like SUM() and AVG() to calculate totals and averages within each group
- Q5. What is the Bash command to suppress all output and errors?
- Ans.
The Bash command to suppress all output and errors is 'command > /dev/null 2>&1'
Use '>' to redirect standard output to /dev/null
Use '2>&1' to redirect standard error to standard output
Combine both to suppress all output and errors: 'command > /dev/null 2>&1'
(3 Questions)
- Q1. Can you tell me about yourself and your family?
- Ans.
I am a dedicated professional with a passion for technology. My family is supportive and close-knit.
I have a background in technical project management
My family consists of my parents, my spouse, and two children
We enjoy spending time together outdoors and traveling
- Q2. Are you comfortable with the possibility of relocating for the position?
- Ans.
Yes, I am open to relocating for the position.
I am open to relocating for the right opportunity
I have relocated for previous positions and am comfortable with the process
I understand the benefits of relocating for career growth and development
- Q3. Would it be acceptable to work shift timings from 6:30 AM to 3:30 PM considering that the client is based in New Zealand?
- Ans.
Yes, it would be acceptable to work shift timings from 6:30 AM to 3:30 PM for a client based in New Zealand.
Working from 6:30 AM to 3:30 PM would align with the standard working hours in New Zealand due to the time zone difference.
This shift timing would allow for better communication and collaboration with the client in New Zealand.
It is important to ensure that the team is able to adjust to the early start time and m...
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed in Dec 2024. There were 4 interview rounds.
10 Macq's and 1 problem solving question.
(9 Questions)
- Q1. Self Introduction
- Q2. Last project details
- Q3. Print all duplicate elements in an Array
- Ans.
Print duplicate elements in an Array of strings
Iterate through the array and use a HashMap to store frequency of each element
Print elements with frequency greater than 1 as duplicates
- Q4. Java Exception Handling and Spring exception handling.
- Q5. Spring IOC and types.
- Ans.
Spring IOC (Inversion of Control) is a design pattern where the control of object creation and lifecycle is shifted to a container.
In Spring IOC, objects are created and managed by the Spring container.
Types of Spring IOC include Constructor-based dependency injection and Setter-based dependency injection.
Example: In Constructor-based dependency injection, dependencies are provided through the constructor of a class.
Ex...
- Q6. Circuit Breaker and its states
- Ans.
Circuit Breaker is a design pattern used in software development to prevent system overload and failures.
Circuit Breaker monitors the number of failures and opens when a threshold is reached.
It can be in states like closed, open, or half-open.
Closed state allows normal operation, open state prevents further requests, and half-open state allows limited requests to check if the system is back to normal.
Examples include H...
- Q7. Design Pattern
- Q8. Get the third highest salary from employee table
- Q9. Valid parentheses from leetCode
(8 Questions)
- Q1. Self intro, Project based questions.
- Q2. Optional Class, Stream.map() vs Stream.flatMap()
- Ans.
Stream.map() transforms each element in a stream, while Stream.flatMap() transforms each element into a stream of values.
map() applies a function to each element in a stream and returns a new stream with the transformed elements.
flatMap() applies a function that returns a stream for each element in the original stream, then flattens the streams into a single stream of values.
Example: map() - Stream.of(1, 2, 3).map(x -&...
- Q3. Lambda, reduce()
- Q4. Sync Api vs Async Api, Sync Microservice and Async microservice example
- Ans.
Sync API waits for a response before continuing, while Async API allows the program to continue executing without waiting for a response.
Sync API is blocking and waits for a response before proceeding
Async API is non-blocking and allows the program to continue executing while waiting for a response
Sync microservice handles requests sequentially, while Async microservice can handle multiple requests concurrently
Example ...
- Q5. Write a REST api to fetch user details using userId.
- Ans.
Create a REST api to fetch user details using userId
Create a GET endpoint /users/{userId} to fetch user details
Use userId as a parameter in the endpoint
Return user details in JSON format
Handle errors for invalid userId
- Q6. SOLID Principle and best coding practices
- Ans.
SOLID principles and best coding practices are essential for creating maintainable and scalable software.
S - Single Responsibility Principle: Each class should have only one responsibility.
O - Open/Closed Principle: Classes should be open for extension but closed for modification.
L - Liskov Substitution Principle: Subtypes should be substitutable for their base types.
I - Interface Segregation Principle: Clients should ...
- Q7. Write a global exception handler class to handle UserNotFound exception.
- Ans.
Create a global exception handler class for UserNotFound exception.
Create a class that extends ExceptionHandler class
Override the handleException method to handle UserNotFound exception
Implement the logic to handle the exception, such as logging or returning a custom error message
- Q8. Advantages of IOC in spring and DI
- Ans.
IOC in Spring and DI offer flexibility, maintainability, and testability in software development.
Promotes loose coupling between components
Allows for easier unit testing and mocking
Facilitates easier configuration and management of dependencies
Enables better separation of concerns
Promotes reusability of components
(1 Question)
- Q1. Self Intro and salary negotiation.
I applied via Approached by Company and was interviewed in Dec 2024. There was 1 interview round.
(5 Questions)
- Q1. How did you implement multithreading in your project?
- Ans.
Implemented multithreading using Java's Thread class and Executor framework.
Used Thread class to create and manage threads.
Utilized Executor framework for managing thread pools and executing tasks.
Implemented synchronization mechanisms like locks and semaphores to prevent race conditions.
Used Java's concurrent data structures like ConcurrentHashMap and BlockingQueue for thread-safe operations.
- Q2. What is the concept of lock isolation in Spring Framework?
- Ans.
Lock isolation in Spring Framework ensures that each transaction operates independently without interfering with other transactions.
Lock isolation prevents concurrent transactions from affecting each other's data.
Different levels of lock isolation can be set in Spring, such as READ_COMMITTED and REPEATABLE_READ.
For example, setting a higher level of lock isolation like REPEATABLE_READ ensures that a transaction will no...
- Q3. What is the purpose of the @Primary and @Qualifier annotations in Spring Framework?
- Ans.
The @Primary annotation is used to give a higher priority to a bean when multiple beans of the same type are present. The @Qualifier annotation is used to specify which bean to inject when multiple beans of the same type are present.
Use @Primary annotation to specify the primary bean to be used when multiple beans of the same type are present.
Use @Qualifier annotation along with the bean name to specify which bean to i...
- Q4. How do you implement security measures for your microservices?
- Ans.
Implementing security measures for microservices involves using authentication, authorization, encryption, and monitoring.
Implement authentication mechanisms such as OAuth, JWT, or API keys to verify the identity of clients accessing the microservices.
Enforce authorization rules to control access to different parts of the microservices based on roles and permissions.
Use encryption techniques like TLS/SSL to secure comm...
- Q5. Handling distributed transactions in microservices using the Saga pattern?
- Ans.
Saga pattern is used to manage distributed transactions in microservices by breaking them into smaller, independent transactions.
Saga pattern involves breaking down a long transaction into a series of smaller, independent transactions.
Each step in the saga is a separate transaction that can be rolled back if needed.
Compensating transactions are used to undo the effects of a previously completed step in case of failure.
...
I applied via Referral and was interviewed in Oct 2024. There was 1 interview round.
(3 Questions)
- Q1. Given an array of non-negative integers.Find the length of the longest subsequence such that elements in the subsequence are contiguous integers. The consecutive numbers can be in any order. Example n=7 nu...
- Ans.
Find the length of the longest subsequence of contiguous integers in an array.
Sort the array
Iterate through the array and check for consecutive integers
Keep track of the longest subsequence found
- Q2. Get list of pincodes from these objects Employee{ id Long, name String, Addresses : List } Addresses{ houseNo long, pindcode long, state String, country String, } Ans. Use flatMap to flatten and then use m...
- Q3. What is Database Pooling, Hikari and its configurations. Java 8 to current enchancements and current java version Factory and Builder design patterns to explain and code Project expalantion and details, Cr...
- Ans.
Database pooling is a technique used to manage a pool of database connections for efficient resource utilization. HikariCP is a popular database connection pooling library in Java.
HikariCP is a high-performance database connection pooling library for Java applications.
It is known for its low latency and high throughput.
Configurations for HikariCP include settings such as maximum pool size, connection timeout, and idle ...
Interview Preparation Tips
Skills evaluated in this interview
It was pretty easy. Various theoretical questions on technical knowledge and 3 coding questions. Since I was applying for a .net profile, all questions were related to that only.
(4 Questions)
- Q1. Coding question on inheritance.
- Q2. Coding question on Abstract classes and their application.
- Q3. Discussion on the company, their culture.
- Q4. Coding question on graph.
(2 Questions)
- Q1. Asked me my expected salary even though it was already decided when they reached out to me.
- Q2. Negotiations on the salary.
Interview Preparation Tips
(5 Questions)
- Q1. Cycle sort based question
- Q2. Streams api, optional, lambda implementation
- Q3. Hashmap iteration ways
- Ans.
There are multiple ways to iterate over a HashMap in Java.
Using keySet() and values() methods
Using entrySet() method
Using forEach() method with lambda expression
- Q4. Method overriding based code question -> guess the output
- Q5. Write API to save data
Skills evaluated in this interview
I applied via Job Portal and was interviewed in Nov 2024. There were 2 interview rounds.
(1 Question)
- Q1. What is your approach to building basic logic skills?
- Ans.
My approach to building basic logic skills involves practicing problem-solving exercises, breaking down complex problems into smaller parts, and seeking feedback to improve.
Practice problem-solving exercises regularly to strengthen logical thinking abilities.
Break down complex problems into smaller, more manageable parts to better understand the problem and find solutions.
Seek feedback from peers or mentors to identify...
(1 Question)
- Q1. Some behavioural questions?
I applied via Job Fair and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. About the design pattern
- Q2. Coding questions in stream api
Interview Preparation Tips
(2 Questions)
- Q1. Sitution based question regarding conflict resolution in the team
- Q2. Logistic regression and confusion matrix
Selected
I applied via Approached by Company and was interviewed in May 2024. There were 2 interview rounds.
(3 Questions)
- Q1. There we a lot of question on Python basics 1. Iterators 2. Generator 3. List Comprehensions 4. Static Method, Class Method 5. Testing in Python - Pytest 6. Magic Methon 7. Try Except Else Block in Python ...
- Q2. DSA Questions 1. Balanced Parenthesis 2. String Compression - Check on Leetcode
- Q3. Basic SQL Count(*) query
- Ans.
The COUNT(*) function in SQL counts all rows in a table, including duplicates and NULL values.
COUNT(*) counts all rows in a table: Example: SELECT COUNT(*) FROM employees;
It includes NULL values: Example: SELECT COUNT(column_name) FROM employees; (counts non-NULLs)
Can be used with WHERE clause: Example: SELECT COUNT(*) FROM employees WHERE department = 'Sales';
Useful for aggregating data: Example: SELECT department, CO...
(3 Questions)
- Q1. Memory Management in Python
- Ans.
Memory management in Python involves automatic memory allocation and deallocation through garbage collection.
Python uses automatic memory management through garbage collection to allocate and deallocate memory.
Memory is managed using reference counting and a cycle-detecting garbage collector.
Python's memory management is efficient for most use cases, but can lead to memory leaks if circular references are not handled p...
- Q2. Garbage Collection in Python
- Ans.
Garbage collection in Python is an automatic memory management process that helps in reclaiming memory occupied by objects that are no longer in use.
Python uses a built-in garbage collector to manage memory automatically.
The garbage collector in Python uses reference counting and a cycle-detecting algorithm to reclaim memory.
Explicitly calling the 'gc.collect()' function can trigger garbage collection in Python.
Garbage...
- Q3. Code a system to query an API, do multiprocessing and improve the efficiency
- Ans.
Code a system to query an API, do multiprocessing and improve efficiency
Use a library like requests in Python to query the API
Implement multiprocessing using a library like multiprocessing or threading in Python
Optimize efficiency by caching API responses or using asynchronous programming
Interview Preparation Tips
DSA asked is generally easy, do some practice on LeetCode
Skills evaluated in this interview
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