Vegrow Intern Interview Questions and Answers

Heap sort is a comparison-based sorting algorithm that uses a binary heap data structure.

• It divides the input into a sorted and an unsorted region.

• It repeatedly extracts the maximum element from the unsorted region and inserts it into the sorted region.

• It has a time complexity of O(n log n) and is not stable.

• Example: [8, 5, 3, 1, 9, 6, 0, 7, 4, 2] -> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Sort an array of strings based on a custom filter criteria.

• Define the custom filter criteria (e.g., length, alphabetical order).

• Use built-in sorting functions with a comparator.

• Example: Sort by length: ['apple', 'banana', 'kiwi'] -> ['kiwi', 'apple', 'banana'].

• Example: Sort alphabetically: ['banana', 'apple', 'kiwi'] -> ['apple', 'banana', 'kiwi'].

Docker is a platform for developing, shipping, and running applications in containers, ensuring consistency across environments.

• Containerization: Docker packages applications and their dependencies into containers, ensuring they run consistently across different environments.

• Dockerfile: A text file that contains instructions to build a Docker image. Example: 'FROM node:14' specifies the base image.

• Docker Compose: A too...read more

Blue/green deployment is a strategy for minimizing downtime and risk by running two identical production environments.

• Two Environments: In blue/green deployment, two identical environments (blue and green) are maintained. One is live (e.g., blue) while the other (green) is idle.

• Seamless Switch: When a new version of the application is ready, it is deployed to the idle environment (green). Once tested, traffic is switch...read more

Centering a div container can be achieved using CSS techniques like flexbox, grid, or margin auto for block elements.

• Using Flexbox: Set the parent container to display: flex; and justify-content: center; align-items: center; to center the child div.

• Example: .parent { display: flex; justify-content: center; align-items: center; height: 100vh; } .child { width: 50%; }

• Using Grid: Set the parent to display: grid; and use p...read more

To run a React project, use the command 'npm start' in the project directory to start the development server.

• Navigate to the project directory: Use 'cd your-project-name' to go to your React project folder.

• Install dependencies: Run 'npm install' to install all required packages listed in package.json before starting the project.

• Start the development server: Execute 'npm start' to launch the React application in your de...read more