Adeptia Backend Developer Interview Questions and Answers for Experienced

6 questions to be dones in 1 hr 5 mins

No of Questions : 4 questions
Difficulty : Difficult
Topics : Sieve of eratosthenis, DP, Hashing

Q1. Search in the rotated Sorted array. (Binary Search - pivot)
Ans. 
Search for an element in a rotated sorted array using binary search with pivot.
• Find the pivot element using binary search.

• Compare the target element with the first element of the array to determine which half to search.

• Perform binary search on the selected half of the array.

• Repeat until the target element is found or the array is exhausted.
Answered by AI
Add your answer
Q2. Sort the array which consists of 0's, 1's , 2's. (Two Pointer approach)
Ans. 
Sort an array of 0's, 1's, and 2's using two pointer approach.
• Initialize two pointers, one at the beginning and one at the end of the array.

• Traverse the array and swap 0's to the beginning and 2's to the end using the pointers.

• Stop when the pointers meet or cross each other.
Answered by AI
Add your answer
Q3. Tell me about id selector in CSS
Ans. 
ID selector is used to select an element with a specific ID attribute in CSS.
• ID selector is denoted by '#' followed by the ID name.

• ID should be unique on a page.

• ID selector has higher specificity than class selector.

• Example: #header { color: blue; }
Answered by AI
Add your answer

Q1. Differences between ShallowCopy & DeepCopy
Ans. 
ShallowCopy copies only the reference of an object while DeepCopy creates a new object with a new reference.
• ShallowCopy creates a new reference to the same object, so changes made to the copy will reflect in the original object.

• DeepCopy creates a new object with a new reference, so changes made to the copy will not reflect in the original object.

• ShallowCopy is faster and less memory-intensive than DeepCopy.

• DeepCopy is ...read more
Answered by AI
Add your answer
Q2. Define Copy Constructor
Ans. 
Copy constructor is a special constructor that creates a new object by copying an existing object.
• It is used to create a new object with the same values as an existing object.

• It takes an object of the same class as a parameter.

• It is automatically called when a new object is created from an existing object.

• It creates a deep copy of the object, meaning that all the member variables are copied.

• Example: class MyClass { pub...read more
Answered by AI
Add your answer
Q3. Define Operator overloading
Ans. 
Operator overloading allows operators to have different meanings based on the context of their usage.
• Operator overloading is a feature in object-oriented programming languages.

• It allows operators to be redefined for custom classes.

• For example, the '+' operator can be overloaded to concatenate strings or add numbers.

• It can improve code readability and reduce the amount of code needed for certain operations.
Answered by AI
Add your answer
Q4. Differences between struct and class
Ans. 
Struct is a value type while class is a reference type in C#.
• Structs are stored on the stack while classes are stored on the heap.

• Structs cannot be inherited while classes can be inherited.

• Structs do not support destructors while classes do.

• Structs are used for small data structures while classes are used for larger, more complex objects.

• Example of struct: struct Point { public int X; public int Y; }

• Example of class: c...read more
Answered by AI
Add your answer
Q5. DSA : Search an element in infinite soted array
Ans. 
Search an element in an infinite sorted array using binary search.
• Initialize low as 0 and high as 1.

• Double the high index until arr[high] is greater than the target element.

• Perform binary search between low and high indexes.
Answered by AI
Add your answer

DSA based round. Taken by external company. I would say to medium level questions asked.

Q1. This was based on LLD.
Add your answer
Q2. Why SQL and not NoSQL?
Ans. 
SQL is preferred for structured data, transactions, complex queries, and ACID compliance.
• SQL is better for structured data and relationships between data.

• SQL is preferred for transactions and ensuring data integrity.

• SQL is more suitable for complex queries involving multiple tables.

• SQL databases provide ACID compliance for data consistency and reliability.
Answered by AI
Add your answer

Q1. Past project experience with a Tech Lead.
Ans. 
Worked on a project with a Tech Lead to develop a new feature for a web application.
• Collaborated closely with the Tech Lead to define project requirements and timelines

• Received guidance and mentorship from the Tech Lead on best practices and coding standards

• Participated in regular code reviews and discussions with the Tech Lead to ensure quality and consistency

• Implemented feedback and suggestions provided by the Tech L...read more
Answered by AI
Add your answer
Q2. More into the problems I have solved previously and the working culture discussion.
Add your answer

Q1. Find in rotated sorted array
Ans. 
Search for a target value in a rotated sorted array.
• Use binary search to find the pivot point where the array is rotated.

• Determine which half of the array the target value lies in based on the pivot point.

• Continue binary search in the appropriate half of the array to find the target value.
Answered by AI
Add your answer
Q2. Design IMDB. how will you manage concurrent ratings
Ans. 
Design IMDB with concurrent ratings management
• Implement a locking mechanism to ensure only one user can update a rating at a time

• Use a queue system to handle multiple rating requests in an orderly manner

• Consider using distributed systems to handle high concurrency levels
Answered by AI
Add your answer

Q1. Design vehicle rental system. Api design
Ans. 
Design a vehicle rental system API
• Create endpoints for listing available vehicles, booking a vehicle, and returning a vehicle

• Include authentication and authorization mechanisms for users and admins

• Implement payment gateway integration for processing rental payments

• Include features like vehicle search, filtering, and reviews/ratings

• Consider scalability and performance optimizations for handling high traffic
Answered by AI
Add your answer