Cotecna Inspection India HR Manager Interview Questions and Answers

Find the minimum element in a rotated sorted array.

• Perform binary search to find the pivot point where the array is rotated.

• Compare the element at pivot point to the first element to determine which half to search for the minimum.

• Continue binary search in the appropriate half to find the minimum element.

API for Instagram application to interact with user data and DB schema to store user information and posts.

• API endpoints for user authentication, posting photos, liking photos, following users, etc.

• DB schema with tables for users, posts, comments, likes, followers, etc.

• Example API endpoint: /users/{userId}/posts to retrieve all posts by a specific user.

• Example DB schema: Users table with columns for username, email, pr

A dirty read occurs when a transaction reads data that has been modified but not yet committed by another transaction.

• Dirty reads can lead to inconsistencies, as the data may change before the first transaction is committed.

• For example, if Transaction A updates a record but hasn't committed yet, and Transaction B reads that record, Transaction B sees uncommitted data.

• If Transaction A rolls back, Transaction B will have...read more

Design patterns are reusable solutions to common software design problems, promoting best practices and improving code maintainability.

• Creational patterns (e.g., Singleton, Factory Method) manage object creation.

• Structural patterns (e.g., Adapter, Composite) deal with object composition.

• Behavioral patterns (e.g., Observer, Strategy) focus on communication between objects.

• Design patterns help in code reusability and sca

Program to check balanced brackets in a given string

• Use a stack to keep track of opening brackets

• Iterate through the string and push opening brackets onto the stack

• When a closing bracket is encountered, pop from the stack and check if it matches the corresponding opening bracket

• If stack is empty at the end and all brackets are matched, the string is balanced