Quince Interview Questions and Answers

Q1. Polyfill input out questions
Add your answer
Q2. Implement debouncing
Add your answer
Q3. Performce optimization
Add your answer
Q4. React hooks explanation
Ans. 
React hooks are functions that let you use state and other React features without writing a class.
• React hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

• useState() is a hook that allows you to add state to functional components.

• useEffect() is a hook that allows you to perform side effects in functional components.

• Custom hooks are reusable functions that can contain ...read more
Answered by AI
Add your answer

JavaScript coding round

Q1. JavaScript Event loop
Add your answer
Q2. Browser rendering process
Ans. 
Browser rendering process involves multiple steps from parsing HTML to displaying content on the screen.
• HTML parsing: Browser parses HTML markup to create the Document Object Model (DOM).

• CSS parsing: Stylesheets are parsed to create the CSS Object Model (CSSOM).

• Render tree construction: DOM and CSSOM are combined to create the render tree.

• Layout: The render tree is laid out to determine the position and size of each el...read more
Answered by AI
Add your answer

Q1. Find a target element in a sorted array
Ans. 
Binary search algorithm can be used to find a target element in a sorted array.
• Implement binary search algorithm to efficiently find the target element in a sorted array.

• Compare the target element with the middle element of the array and adjust the search range accordingly.

• Continue dividing the search range in half until the target element is found or the search range is empty.
Answered by AI
Add your answer
Q2. From the given list of strings, find the first k most occurring strings
Ans. 
Find the first k most occurring strings from a given list
• Use a hashmap to store the frequency of each string

• Sort the hashmap based on frequency in descending order

• Return the first k keys from the sorted hashmap
Answered by AI
Add your answer

Q1. Dutch national flag algorithm
Ans. 
Dutch national flag algorithm is used to sort an array of 0s, 1s, and 2s in linear time complexity.
• Initialize three pointers: low, mid, high

• Iterate through the array and swap elements based on their values

• Low pointer points to the start of 0s, mid pointer points to the start of 1s, high pointer points to the end of 2s
Answered by AI
Add your answer