BUSINESSNEXT Reactjs Developer Interview Questions, Process, and Tips

Find median of 2 sorted arrays in O(log N) time complexity and O(1) space complexity

• Use binary search to find the partition point in both arrays

• Calculate the median based on the partition point and array sizes

• Adjust the partition points based on the median value

• Repeat until the partition points are at the median

• Handle edge cases such as empty arrays and uneven array sizes

Anagram of strings in O(1) space complexity

• Use a fixed size array of integers to store the frequency of characters in the first string

• Iterate through the second string and decrement the frequency of each character in the array

• If all the frequencies are zero, then the strings are anagrams

• Return true or false accordingly

Level order traversal of a tree using Queue

• Create a queue and add the root node to it

• While the queue is not empty, remove the front node and print its value

• Add the left and right child nodes of the removed node to the queue

• Repeat until the queue is empty

Reverse level order traversal of a tree using Queue

• Create a queue and push the root node into it

• While the queue is not empty, pop the front node and push its children into the queue

• Add the popped node to a stack

• Once the queue is empty, pop elements from the stack and print them

BFS and DFS are graph traversal algorithms. BFS explores nodes level by level while DFS explores nodes depth by depth.

• BFS uses a queue while DFS uses a stack or recursion.

• BFS is optimal for finding shortest path while DFS is optimal for finding a path between two nodes.

• BFS requires more memory as it stores all the nodes at each level while DFS requires less memory.

• BFS can be used to find connected components while DFS

Find product of each element of an array except that element in O(N) time complexity without using / operation

• Use prefix and suffix products

• Multiply prefix and suffix products for each element to get the final product

• Handle edge cases where array has 0 or 1 element separately

Recursively delete a linked list

• Create a recursive function that takes the head of the linked list as input

• Base case: if the head is null, return

• Recursively call the function with the next node as input

• Delete the current node

Recursively delete a linked list from the end.

• Start from the head and recursively traverse to the end of the list.

• Delete the last node and set the second last node's next pointer to null.

• Repeat until the entire list is deleted.

• Use a recursive function to implement the deletion process.

Recursively delete a tree by deleting all its child nodes and then the parent node.

• Start from the leaf nodes and delete them first.

• Then move up to the parent nodes and delete them.

• Repeat until the root node is deleted.

• Use post-order traversal to ensure child nodes are deleted before parent nodes.

Recursively delete elements from the end of an array.

• Create a recursive function that removes the last element of the array.

• Call the function recursively until the desired number of elements are removed.

• Handle edge cases such as empty arrays and removing more elements than the array contains.

Floyd Warshall finds shortest path between all pairs of vertices while Djikstra finds shortest path from a single source.

• Floyd Warshall is used for dense graphs while Djikstra is used for sparse graphs.

• Floyd Warshall has a time complexity of O(n^3) while Djikstra has a time complexity of O((n+m)logn).

• Floyd Warshall can handle negative edge weights while Djikstra cannot.

• Floyd Warshall can detect negative cycles while Dj

There is no known algorithm to find shortest path in 2-D space in O(log N) time.

• The best known algorithm for finding shortest path in 2-D space is Dijkstra's algorithm which has a time complexity of O(N^2).

• Other algorithms like A* and Bellman-Ford have better time complexity but still not O(log N).

• If the points are on a grid, Lee algorithm can be used which has a time complexity of O(N).

Design a system for putting newspapers using classes and functions

• Create a Newspaper class with attributes like title, date, and content

• Create a Publisher class with methods to publish and distribute newspapers

• Create a Subscriber class with methods to subscribe and receive newspapers

• Use inheritance to create different types of newspapers like daily, weekly, etc.

• Implement a database to store newspaper information and ha

I believe practical experience is more valuable than higher studies.

• I have gained valuable experience through internships and projects.

• I prefer hands-on learning and problem-solving over theoretical knowledge.

• I am constantly learning and improving my skills through online courses and workshops.

I apologize, but I do not have a GRE score as it is not applicable to my role as a Business Analyst.

• As a Business Analyst, my skills and experience are evaluated through my work history, education, and certifications.

• GRE scores are typically required for admission to graduate programs, but not for a Business Analyst position.

• My focus is on utilizing my analytical and problem-solving skills to support business decisions

CAT score is not applicable for a Business Analyst role.

• CAT score is a standardized test for admission to management programs.

• It is not relevant for a Business Analyst role.

• Business Analysts require skills in data analysis, problem-solving, and communication.

• Other relevant qualifications for a Business Analyst role include a degree in business, economics, or a related field, and experience in data analysis or project m

I am impressed with the company's reputation and growth potential.

• Your company has a strong reputation in the industry.

• I am excited about the opportunity to work with a talented team.

• I believe your company's growth potential aligns with my career goals.

• Your company's values and mission resonate with me.

• I am impressed with the innovative projects your company is working on.

I'm sorry, I don't have access to that information.

• No data available

• I don't have access to that information

My plans for the future include continuous learning, career growth, and contributing to the success of the company.

• Continuously improve my skills and knowledge through training and development programs

• Take on challenging projects and responsibilities to advance my career

• Collaborate with colleagues to achieve company goals and objectives

Reliable

• Consistent in meeting deadlines and delivering quality work

• Trustworthy and dependable

• Known for being organized and detail-oriented

My strengths are attention to detail and problem-solving skills.

• Attention to detail helps me identify potential issues and ensure accuracy in my work.

• Problem-solving skills enable me to analyze complex situations and find effective solutions.

• For example, in my previous role, I was able to identify a flaw in the company's inventory management system and proposed a solution that saved the company thousands of dollars.

• I a...read more

My weakness is public speaking.

• I tend to get nervous when speaking in front of large groups.

• I am actively working on improving my public speaking skills through practice and training.

• I have found that preparing thoroughly and practicing beforehand helps me feel more confident.

• I also try to focus on the message I am trying to convey rather than my own nerves.

In 5 years, I see myself as a senior business analyst leading a team and contributing to the growth of the company.

• Leading a team of business analysts

• Contributing to the growth of the company through data-driven insights and recommendations

• Continuing to develop my skills and knowledge in the field of business analysis

• Building strong relationships with stakeholders and clients

• Exploring opportunities for process improvem

I do not have the JEE rank, but my 10th and Inter Math scores are above average.

• I do not have my JEE rank available at the moment.

• However, my 10th and Inter Math scores are above average.

• I can provide more details on my academic achievements and relevant experience.

• For example, I have completed a course in data analysis and have experience in using SQL for data querying.

The angle at which the plane descends cannot be accurately determined without additional information.

• The angle of descent depends on the rate of descent and the distance remaining to the destination.

• The weight of the plane, wind speed and direction, and other factors can also affect the angle of descent.

• Without knowing the rate of descent or the remaining distance, it is impossible to accurately estimate the angle of d

I believe gaining practical experience in a job will complement my theoretical knowledge from MS/MBA.

• Practical experience is crucial for a business analyst role

• A job will provide opportunities to apply theoretical knowledge in real-world scenarios

• A job will also help me develop soft skills such as communication and teamwork

• MS/MBA can be pursued later for further career growth

• A job can provide financial stability while

Approximately 2 million metric tons of detergent is used in India annually.

• Consider the population of India and the average usage of detergent per person.

• Factor in the usage of detergent in industries and commercial establishments.

• Take into account the different types of detergents used for various purposes.

• Refer to market research reports for more accurate data.

• Assume a growth rate in detergent usage based on populati...read more

Yes, I have a few questions regarding the role and responsibilities of a Business Analyst.

• Can you tell me more about the company's current business processes?

• What are the key performance indicators (KPIs) that the company tracks?

• How does the company measure the success of a project?

• What tools and software does the company use for data analysis?

• Can you provide an example of a successful project that the Business Analyst