Dimaag-AI Interview Questions and Answers

Implement a stack using 2 queues

• Use two queues to simulate stack operations

• Push operation can be implemented by adding elements to one of the queues

• Pop operation can be implemented by transferring elements between the two queues

React lifecycle methods are special methods that are called automatically at certain points in a component's life cycle.

• Mounting: constructor, render, componentDidMount

• Updating: render, componentDidUpdate

• Unmounting: componentWillUnmount

JavaScript event loop manages the execution of multiple tasks in a single-threaded environment.

• JavaScript is single-threaded, meaning it can only execute one task at a time.

• The event loop continuously checks the call stack for tasks to execute.

• Tasks are added to the call stack from the callback queue once the call stack is empty.