HashedIn by Deloitte Interview Questions, Process, and Tips

There were 3 coding questions of moderate difficulty.

Q1. Code transpose of matrix
Ans. 
Transpose a matrix by swapping rows with columns
• Iterate through each row and column and swap the elements

• Create a new matrix with swapped rows and columns

• Ensure the new matrix has the correct dimensions
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Q2. Implement swap method.
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Implement a swap method for two variables.
• Create a temporary variable to store the value of one variable.

• Assign the value of the second variable to the first variable.

• Assign the value of the temporary variable to the second variable.
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Q1. Depth of a binary tree
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The depth of a binary tree is the number of edges on the longest path from the root node to a leaf node.
• Depth of a binary tree can be calculated recursively by finding the maximum depth of the left and right subtrees and adding 1.

• The depth of a binary tree with only one node (the root) is 0.

• Example: For a binary tree with root node A, left child B, and right child C, the depth would be 1.
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Q2. Middle of linked list.
Ans. 
To find the middle element of a linked list, use two pointers - one moving at double the speed of the other.
• Use two pointers - slow and fast, with fast moving at double the speed of slow.

• When fast reaches the end of the list, slow will be at the middle element.
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Q3. Design book my show
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Q1. Why do you want to join hashedin.
Ans. 
I want to join Hashedin because of its reputation for innovative projects and collaborative work environment.
• Reputation for innovative projects

• Collaborative work environment

• Opportunities for growth and learning
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Q2. Challenges faced in my previous internship.
Ans. 
Managing tight deadlines and learning new technologies were the main challenges faced in my previous internship.
• Meeting tight project deadlines

• Adapting to new technologies quickly

• Working in a fast-paced environment

• Collaborating with team members effectively
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Q1. C++ related questions
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Q1. Sql related questions qnd c++
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Q1. What r u expected salary
Ans. 
My expected salary is based on my experience, skills, and the market rate for software engineers.
• Consider my years of experience in software development.

• Take into account my specialized skills or certifications.

• Research the current market rate for software engineers in this location.

• Factor in any additional benefits or perks offered by the company.

• Be open to negotiation based on the overall compensation package.
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Q1. Introduction about yourself
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Q2. Performance Testing by Postman? Status codes, usage of PUT & POST
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Q3. Sanity & Smoke Testing Differences
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Q4. User Story/Feature differences? Bug/Defect/Error differences?
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Q5. Select & Update SQL Query - Hands-on
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Q6. Negative testcases for a login page - Hands-on
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Q7. Different types of Waits in Selenium? POM ?Relative/Absolute Xpath
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Q8. Open W3School and find Xpath for search button manually - Hands-on
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Q9. Take several types of data in an array and print only numbers from there - Programming Hands-on (Java)
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2 DSA questions asked which was of easy-moderate leetcode level, mainly from strings and linkedlist. After that questions on projects, and technical questions on java, oops, springboot.

Q1. It was a system design round, wherein I was asked LLD of a food delivery system with lot of deep dive questions along the way.
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Q2. Monolith vs Microservices difference? which is better and why?
Ans. 
Monolith is a single, large application while microservices are smaller, independent services. Microservices are better for scalability and flexibility.
• Monolith is a single, large application where all components are tightly coupled. Microservices are smaller, independent services that communicate with each other through APIs.

• Monoliths are easier to develop and deploy initially but become harder to maintain and scale a...read more
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Q1. It was a techno-managerial round with the hiring manager. Questions on projects, basic managerial questions.
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Q2. Why should we hire you?
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Q3. Where do you see yourself in 5 years?
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Q4. If asked your team about you, how do you think they will describe you ? (2 qualities)
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