BlackBelt Help React Developer Interview Questions and Answers

Q1. Basic JS question event loop, promises, polyfill.
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Q2. JS output based, Flatten object.
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The first round consisted of a coding exercise along with fundamental questions related to React Native, JavaScript, and inquiries about objects and arrays.

Q1. Native modules, useRef, Flatlist
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Easy to medium level of leet code

Q1. 1. Fibonacci series with recursion and without recursion 2. String Palindrome 3. Count all repeated numbers from the array
Ans. 
Answering questions related to Fibonacci series, string palindrome, and counting repeated numbers in an array.
• For Fibonacci series with recursion, write a function that calls itself to calculate the next number in the series.

• For Fibonacci series without recursion, use a loop to calculate the series.

• For string palindrome, compare characters from start and end of the string.

• To count all repeated numbers from the array, u
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Q1. 1.Given an array(0-based indexing), you have to find the max sum of i*A[i] where A[i] is the element at index i in the array. The only operation allowed is to rotate(clock-wise or counter clock-wise) the ...read more
Ans. 
Rotate array to find max sum of i*A[i]
• Rotate array to bring maximum element to front

• Calculate sum of i*A[i] for each rotation

• Keep track of maximum sum found
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Q1. 1.Oops concepts 2.Oops code 2.About Java Spring 3. Array stack questions 4.Project discussion
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3 Leetcode style questions , 2 medium , 1 hard .

Q1. Design a cab booking system using oops
Ans. 
A cab booking system designed using OOP principles
• Create classes for Cab, Customer, Driver, and Booking

• Use inheritance and polymorphism to handle different types of cabs and bookings

• Implement methods for booking a cab, assigning a driver, and calculating fare

• Use encapsulation to protect data and ensure data integrity
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Prepare very well for basics

Prepare very well for basics

Prepare well for algorithm

3 question of basic and 3 mcq

Strings,Sort 0 1 2,invert binary tree

Q1. Project Basics and Technical skills
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Q2. Your Daily routine
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My daily routine involves coding, debugging, attending meetings, and learning new technologies.
• Start the day by checking emails and prioritizing tasks

• Code and debug new features or fix existing issues

• Attend team meetings to discuss progress and roadblocks

• Spend time learning new technologies or improving coding skills

• Collaborate with team members on projects
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Q1. DSA Medium difficulty question Schema Design Low level design Amazon reviews page
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