PharmEasy Front end Developer Interview Questions and Answers

Question are very tough and faad

Question like trees linked list and graphs

Q1. Max sum path in tree
Ans. 
Find the maximum sum path in a tree from root to leaf node.
• Start from the root node and traverse down to leaf nodes, keeping track of the sum at each node.

• At each node, compare the sum of the current path with the maximum sum found so far.

• Choose the path with the maximum sum as the final result.
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Q2. Array 2 sum problem
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Q1. React: Create a Timer
Ans. 
Create a simple timer using React
• Use state to store the timer value

• Use setInterval to update the timer every second

• Display the timer value in the component's render method
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Q2. Javascript: implement Debounce
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Q1. What do you know about the company + common behaviour question
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Q2. About roles in previous org
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Q1. Polyfill for bind Closures Call apply bind let const var lexical environment scope output questions
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Coding test in javascript

Q1. React js questions
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Q2. Angular js questions
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Question are very tough and faad

Question like trees linked list and graphs

Q1. Max sum path in tree
Ans. 
Find the maximum sum path in a tree from root to leaf node.
• Start from the root node and traverse down to leaf nodes, keeping track of the sum at each node.

• At each node, compare the sum of the current path with the maximum sum found so far.

• Choose the path with the maximum sum as the final result.
Answered by AI
Add your answer
Q2. Array 2 sum problem
Add your answer

Q1. React: Create a Timer
Ans. 
Create a simple timer using React
• Use state to store the timer value

• Use setInterval to update the timer every second

• Display the timer value in the component's render method
Answered by AI
Add your answer
Q2. Javascript: implement Debounce
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Q1. What do you know about the company + common behaviour question
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Q2. About roles in previous org
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Q1. Create a pagination
Ans. 
Pagination component to display a list of items with page navigation.
• Create a Pagination component with props for total number of items, items per page, and current page.

• Calculate total number of pages based on total items and items per page.

• Display page numbers with previous and next buttons to navigate through pages.

• Update the list of items displayed based on current page.

• Handle click events on page numbers and previ
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Q1. Write a polyfill of JS promise
Ans. 
A polyfill for JS promise is a piece of code that provides support for promises in older browsers.
• Create a Promise class with resolve, reject, then, and catch methods

• Implement the executor function to handle the asynchronous operation

• Use setTimeout to simulate asynchronous behavior

• Handle chaining of then and catch methods
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Q1. How to detect and prevent Memory leak
Ans. 
Memory leaks can be detected and prevented by monitoring memory usage, using memory profiling tools, avoiding circular references, and properly managing event listeners.
• Monitor memory usage regularly to identify any abnormal increases.

• Use memory profiling tools like Chrome DevTools or Valgrind to analyze memory usage.

• Avoid creating circular references in your code, as they can prevent objects from being garbage collect...read more
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Q1. Advanced JS questions
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