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ThoughtWorks SDE-2 Interview Questions and Answers
ThoughtWorks SDE-2 Interview Experiences
1 interview found
I appeared for an interview in Feb 2022.
(3 Questions)
Round duration - 90 Minutes
Round difficulty - Easy
In this round, there are a total of 16 questions and the time given was 90 mins.
3 Coding questions – Easy, Medium, and Hard.
13 MCQs based on outputs, Computer fundamentals, Aptitude.
- Q1.
N Queens Problem Statement
You are provided with an integer 'N'. For an 'N' x 'N' chessboard, determine how to position 'N' queens such that no queen can attack another queen on the chessboard.
Explanati...
- Ans.
The N Queens problem involves placing N queens on an N x N chessboard so that no two queens can attack each other.
Use backtracking to explore all possible configurations of queen placements.
Keep track of rows, columns, and diagonals to ensure no two queens are attacking each other.
Print all valid configurations of queen placements.
- Q2.
Pair Sum Problem Statement
Given an integer array
ARRof sizeNand an integerS, your goal is to return a list of all pairs of elements such that the sum of elements of each pair equalsS.Example:
Inp...
- Ans.
Return pairs of elements in an array whose sum equals a given integer.
Iterate through the array and store elements in a hashmap.
For each element, check if the complement (S - current element) exists in the hashmap.
Return pairs that satisfy the condition, sorted as per the given rules.
- Q3.
Minimum Number of Platforms Needed Problem Statement
You are given the arrival and departure times of N trains at a railway station for a particular day. Your task is to determine the minimum number of pl...
- Ans.
Determine the minimum number of platforms needed at a railway station based on arrival and departure times of trains.
Sort the arrival and departure times in ascending order.
Use two pointers to keep track of overlapping schedules.
Increment platform count when a new train arrives before the previous one departs.
Round duration - 120 minutes
Round difficulty - Easy
This round is an interesting experience to brainstorm, problem-solve and pair alongside a ThoughtWorks Developer that allows you to demonstrate hands-on coding, design, OOP, and solution skills on the code which you have submitted.The problem statement will be shared with you 20 minutes before the start time of the interview
Interview Preparation Tips
Tip 1 : Prepare system design
Tip 2 : Practice coding questions
Tip 3 : Prepare and search previous interviews
Tip 1 : Have atleast 3 great project
Tip 2 : Write only what you know and prepare well
Skills evaluated in this interview
Interview questions from similar companies
I appeared for an interview before May 2021.
(1 Question)
Round duration - 30 minutes
Round difficulty - Medium
- Q1.
Remove Consecutive Duplicates Problem Statement
Given a string S, your task is to recursively remove all consecutive duplicate characters from the string.
Input:
String S
Output:
Output string
Constr...
- Ans.
Recursively remove consecutive duplicate characters from a string.
Use recursion to check if the current character is the same as the next character, if so, skip the next character
Base case: if the string is empty or has only one character, return the string
Recursive case: if the current character is the same as the next character, call the function recursively with the string excluding the next character
(1 Question)
Round duration - 90 minutes
Round difficulty - Easy
- Q1.
Reverse String Operations Problem Statement
You are provided with a string
Sand an array of integersAof sizeM. Your task is to performMoperations on the string as specified by the indices in arrayA... - Ans.
Perform a series of reverse string operations on a given string based on specified indices.
Iterate through the array of indices and reverse the substring of the string based on the given indices.
Ensure to reverse the substring from the starting index to len(S) - starting index - 1.
Continue the operations in the sequence specified by the array of indices to get the final string.
Round duration - 50 minutes
Round difficulty - Medium
Interview Preparation Tips
Tip 1 : Prepare well for resume & confidence for basic part of CS.
Tip 2 : Good knowledge of skills set which mentioned in CV.
Tip 3 : Explain about projects which you have worked earlier & your roles and responsibilities.
Tip 1 : Mentioned all the skills & certificate till date update your resume every 3 month's.
Tip 2 : Proper skills set with project explanation and duration of project which you have worked on
Skills evaluated in this interview
I appeared for an interview in Aug 2021.
(3 Questions)
Round duration - 45 minutes
Round difficulty - Medium
Technical Interview round that lasted for about 45 minutes. Questions were based on Java, Java design Patterns and OOPS Concepts.
- Q1. What are static methods in interfaces?
- Ans.
Static methods in interfaces are methods that can be called without creating an instance of the interface implementation.
Static methods in interfaces were introduced in Java 8.
They are used for providing utility methods that are related to the interface but do not require an instance of the implementing class.
Static methods in interfaces cannot be overridden by implementing classes.
Example: interface MyInterface { stat...
- Q2. Why was a new version of Java (Java 8) needed in the first place?
- Ans.
Java 8 was needed to introduce new features like lambda expressions, streams, and default methods.
Introduction of lambda expressions for functional programming
Streams API for processing collections in a functional style
Default methods in interfaces for backward compatibility
Improved performance with the introduction of the Nashorn JavaScript engine
Date and Time API for better handling of date and time operations
- Q3. In how many ways can you create a singleton pattern in Java?
- Ans.
There are multiple ways to create a singleton pattern in Java, including using static initialization, lazy initialization, and enum.
Using static initialization: Create a private static instance of the class and a public static method to return that instance.
Lazy initialization: Create a private static instance of the class and a public static method to check if the instance is null before creating it.
Using enum: Create...
(4 Questions)
Round duration - 60 minutes
Round difficulty - Medium
Technical Interview round that lasted for about 45 minutes. Questions were based on Spring boot and Microservices Concepts.
- Q1. What is the difference between the Bridge Pattern and the Adapter Pattern in Java?
- Ans.
Bridge Pattern decouples abstraction from implementation, while Adapter Pattern adapts an interface to another.
Bridge Pattern separates abstraction and implementation using composition, while Adapter Pattern adapts an interface to another without changing its original structure.
Bridge Pattern allows for changes in both abstraction and implementation independently, while Adapter Pattern allows incompatible interfaces to...
- Q2. What is the difference between @RestController and @Controller in Spring Boot?
- Ans.
Difference between @RestController and @Controller in Spring Boot
1. @Controller is used to create web MVC controllers while @RestController is used to create RESTful web services.
2. @Controller returns the view to be rendered while @RestController returns the object and data is written directly to the HTTP response as JSON or XML.
3. @RestController is a specialized version of @Controller that includes @Controller and @...
- Q3. What is the difference between Spring and Spring Boot?
- Ans.
Spring is a framework for building Java applications, while Spring Boot is an extension that simplifies the setup and configuration.
Spring is a comprehensive framework for building Java applications, providing features like dependency injection, aspect-oriented programming, and more.
Spring Boot is an extension of the Spring framework that aims to simplify the setup and configuration of Spring applications.
Spring Boot i...
- Q4. What is the difference between Monolithic and Microservices Architecture?
- Ans.
Monolithic architecture is a single-tiered software application where all components are tightly coupled, while microservices architecture is a distributed approach where the application is broken down into smaller, loosely coupled services.
Monolithic architecture has a single codebase and database, while microservices have multiple smaller services with their own codebase and database.
Monolithic applications are harde...
(1 Question)
Round duration - 30 minutes
Round difficulty - Easy
This was a typical HR round with some standard Behavioral questions
- Q1. Why should we hire you?
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Senior Software Engineer Interview Questions & Answers
Tech Mahindra
Anonymous
posted on 14 May 2022
I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.
(1 Question)
- Q1. Discuss 4 case study related to supply chain management.
Interview Preparation Tips
- Supply Chain Management
I applied via Campus Placement and was interviewed before Feb 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. Hr
Interview Preparation Tips
I applied via Recruitment Consultant and was interviewed before Aug 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Tell me about yourself
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.
Easy DSA questions and some questions on resume
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Mar 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. How do you get the second to last element from a SQL table?
- Ans.
To get the second to last element from a SQL table, use the OFFSET-FETCH clause.
Use the ORDER BY clause to sort the table in descending order.
Use the OFFSET-FETCH clause to skip the last row and fetch the second to last row.
Example: SELECT column_name FROM table_name ORDER BY column_name DESC OFFSET 1 ROWS FETCH NEXT 1 ROWS ONLY;
Interview Preparation Tips
Skills evaluated in this interview
Interview Questionnaire
1 Question
- Q1. About the SDLC
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Jun 2019. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Configuration Management, data modelling, CI relationships, Problem management process flow, SIAM, integration, cmdb reports, KPIs.
- Q2. General introduction, projects handled in the past,
Interview Preparation Tips
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