Milliman Front end Developer Interview Questions and Answers

Q1. Merge sort time complexity less
Ans. 
Merge sort has a time complexity of O(n log n) in the worst case scenario.
• Merge sort divides the array into two halves, sorts them recursively, and then merges them back together.

• The time complexity of merge sort is O(n log n) in the worst case scenario.

• For example, sorting an array of 8 elements would take 3 recursive calls to merge sort.
Answered by AI
Add your answer
Q2. Palindrome with react js to show on UI
Ans. 
Create a palindrome checker using React JS to display on the UI
• Create a input field for user to enter a string

• Use state to store the input string

• Create a function to check if the input string is a palindrome

• Display the result on the UI
Answered by AI
Add your answer

Javascript question on promise, callbacks, hosting

Q1. Fir arrow function This keyword Promises Promise chain Generator function Rest operator Spread operator React hooks Higher order component Redux life cycle Palindrome string code Fibonacci code
Add your answer

Q1. Array linked list queue
Add your answer

Q1. 1) what is ReactJs?
Ans. 
ReactJS is a JavaScript library for building user interfaces.
• Developed by Facebook

• Uses a virtual DOM for efficient updates

• Supports server-side rendering

• Can be used with other libraries and frameworks

• Uses JSX syntax to write HTML-like code in JavaScript

• Example: Facebook, Instagram, Airbnb, Netflix use ReactJS
Answered by AI
Add your answer
Q2. 2) What us UseState() In React
Ans. 
UseState() is a hook in React that allows functional components to have state variables.
• useState() is used to declare state variables in functional components.

• It returns an array with two elements: the current state value and a function to update it.

• The function to update the state can be called with a new value or a function that takes the previous value as an argument.

• Example: const [count, setCount] = useState(0);

• Ex
Answered by AI
Add your answer

Q1. JavaScript Related Questions
Add your answer
Q2. ReactJs Related Questions
Add your answer

Q1. Reactjs Use Effects and UseRef
Add your answer
Q2. JavaScript Closures,Map,CallBack
Add your answer

Q1. What are closures with examples ?
Ans. 
Closures are functions that have access to their own scope, as well as the scope in which they were defined.
• Closures allow functions to access variables from their outer function even after the outer function has finished executing.

• Closures are commonly used in event handlers and callbacks.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar); }; }
Answered by AI
Add your answer
Q2. How to get updated content on scroll on e-commerce app?
Ans. 
Use infinite scrolling to fetch new content as user scrolls down the page.
• Implement infinite scrolling to load more products as user scrolls down

• Make AJAX calls to fetch new content from the server

• Update the DOM with the new content dynamically
Answered by AI
Add your answer

Javascript array questions like palindrom and others with aptitude

Q1. Skill related technical questions
Add your answer
Q2. How to share data in components react
Ans. 
Data can be shared between components in React using props, context, or state management libraries like Redux.
• Use props to pass data from parent to child components

• Use context to share data across multiple components without passing props manually

• Use state management libraries like Redux to manage global state and share data between components
Answered by AI
Add your answer
Q3. Prop drilling explain in react
Ans. 
Prop drilling is the process of passing data through multiple levels of components in React.
• Prop drilling occurs when a component needs to pass data to a deeply nested child component.

• It can lead to code that is hard to maintain and understand.

• One way to avoid prop drilling is by using Context API or Redux for state management.
Answered by AI
Add your answer
Q4. Redux flow explain
Ans. 
Redux is a predictable state container for JavaScript apps.
• Redux stores the entire state of an application in a single immutable object.

• State changes are made by dispatching actions, which are plain JavaScript objects.

• Reducers specify how the application's state changes in response to actions.

• Redux flow: Action -> Reducer -> Store -> View
Answered by AI
Add your answer

Q1. Previous project discussion
Add your answer

Q1. HTML CSS JS Angular React Questions
Add your answer