Hotstar Reactjs Developer Interview Questions and Answers for Experienced

It was based on Javascript. Some web basics like CORS , react rendering patterns. Then JS based output questions. Some were based on JS promise. Function currying.

Machine coding test with a duration of 2 hr. where they'll give one simple project to build.

Low level design | duration 60 min

Sorting of an array and aptitude

• Q1. BFS graph traversal
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• Q1. Binary tree question
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• Q1. Coding questions on React + JS
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The first round is Hackerrank two algo and one UI test very easy, Second is Fundamentals of JS and React Native one must have a deep understanding of JS to do that I strongly suggest going through Akashay Saini's JS series It'll help and the Third is PS/DS asked some basic A&DS questions can be solved easily with little practice on Leetcode

Round duration - 60 Minutes
Round difficulty - Easy

• Q1. 0 1 Knapsack A thief is robbing a store and can carry a maximal weight of W into his knapsack. There are N items and the ith item weighs wi and is of value vi. ...read more
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• Q2. Second largest element in the array You have been given an array/list 'ARR' of integers. Your task is to find the second largest element present in the ...read more
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Round duration - 60 Minutes
Round difficulty - Easy

System Design Round

• Q1. System Design Question

  Design Twitter

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• Q2. DBMS Questions

  Normalizations, Indexing, Transactions etc

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Round duration - 30 Minutes
Round difficulty - Easy

It is just a formality

• Q1. Basic HR Questions

  Where do you see yourself in 5 years?

  What are your weakness ?

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