Johnson & Johnson Research & Development,application,marketing Interview Questions and Answers

Stack using queues: push() - enqueue to queue1, pop() - dequeue from queue2 after transferring n-1 elements from queue1 to queue2

• To push an element, enqueue it to queue1

• To pop an element, transfer n-1 elements from queue1 to queue2, dequeue the last element from queue1 and swap the names of queue1 and queue2

• Queue using stacks: enqueue() - push to stack1, dequeue() - pop from stack2 after transferring all elements from ...read more

Doubly linked list is a data structure where each node has a pointer to both previous and next nodes.

• Create a Node class with data, prev and next pointers

• Create a LinkedList class with head and tail pointers

• Implement methods to add, remove and traverse nodes

Yes, I am a leader.

• I have experience leading teams in previous projects.

• I am able to communicate effectively and motivate team members.

• I am proactive in identifying and solving problems.

• I am able to delegate tasks and trust team members to complete them.

• I am constantly seeking to improve my leadership skills through learning and feedback.

I am a recent computer science graduate with experience in software development and a passion for learning new technologies.

• Graduated with a degree in computer science

• Experience in software development

• Passionate about learning new technologies

The company is a software development firm.

• The company specializes in software development.

• It has a team of experienced software engineers.

• The company has worked on various projects for clients in different industries.

• It is known for delivering high-quality software solutions.

• The company values innovation and creativity in its work.

Formula to calculate number of squares that can fit inside a triangle

• Calculate the area of the triangle and the area of the square

• Divide the area of the triangle by the area of the square to get the number of squares that can fit inside the triangle

• Formula: (h*b)/(a*a)

SVM is a machine learning algorithm used for classification and regression analysis.

• SVM finds the best hyperplane that separates data into different classes.

• It works by maximizing the margin between the hyperplane and the closest data points.

• SVM can handle both linear and non-linear data using kernel functions.

• It is widely used in image classification, text classification, and bioinformatics.

• SVM has been shown to be ef...read more

Logistic regression is used for classification while linear regression is used for regression analysis.

• Logistic regression predicts the probability of an event occurring, while linear regression predicts the value of a continuous variable.

• Logistic regression uses a sigmoid function to map input values to a probability between 0 and 1.

• Linear regression assumes a linear relationship between the independent and dependent ...read more

Eligible customers for Vodafone's 4G service launch in India.

• Customers with 4G compatible devices

• Customers with high data usage

• Customers in areas with good network coverage

• Customers who have shown interest in technology and gadgets

• Customers who have previously used Vodafone's high-speed data services

• Customers who have opted-in to receive promotional messages

I am a detail-oriented Business Analyst with strong analytical skills. My strengths include problem-solving and communication, while my weakness is sometimes being too detail-oriented.

• Strengths: strong analytical skills

• Strengths: problem-solving abilities

• Strengths: effective communication skills

• Weakness: being too detail-oriented

• Weakness: sometimes struggle with delegation

Yes, I am willing to work extra hours and weekends when necessary.

• I am committed to meeting project deadlines and delivering high-quality work.

• I understand that sometimes extra hours may be required to complete tasks or address urgent issues.

• I have previous experience working weekends and extra hours when needed, such as during busy project phases or critical system upgrades.

Yes, I am okay with working in Noida.

• I am open to working in Noida and have no issues with the location.

• I have worked in Noida before and am familiar with the area.

• I am willing to relocate to Noida if required for the job.

Find the heavier ball out of 8 using a weighing balance in minimum and maximum attempts.

• Divide the balls into 3 groups of 3, 3, and 2.

• Weigh the first two groups against each other.

• If they balance, the heavier ball is in the third group.

• If one group is heavier, weigh two balls from that group against each other.

• If they balance, the heavier ball is the remaining one.

• If one ball is heavier, that is the answer.

• In the worst...read more

In 3 attempts, the heavier ball can be found using the weighing balance.

• Divide the balls into 3 groups of 3, 3, and 5 balls.

• Weigh the first two groups against each other.

• If they balance, the heavier ball is in the third group. Weigh two balls from the third group against each other to find the heavier one.

• If they don't balance, the heavier ball is in the heavier group. Take two balls from the heavier group and weigh th

Use a binary search approach to find the heavier ball among 'n' balls using a weighing balance.

• Divide the 'n' balls into two equal groups and weigh them on the balance.

• If one group is heavier, repeat the process with that group.

• If both groups weigh the same, the heavier ball is among the remaining unweighed balls.

• Continue dividing and weighing until the heavier ball is found.

The number of soft drinks sold in J&K on a particular day depends on various factors such as population, demand, availability, and marketing strategies.

• The population of J&K can be a factor in determining the potential number of soft drink sales.

• The demand for soft drinks can vary based on factors such as weather, events, and cultural preferences.

• The availability of soft drinks in J&K, including distribution channels a...read more

Estimating the market size of 4K and 8K display screens.

• Analyze sales data and market research reports

• Consider the adoption rate of 4K and 8K technology

• Evaluate the market demand from various industries (entertainment, gaming, advertising, etc.)

• Assess the pricing and availability of 4K and 8K displays

• Factor in the growth potential and competition in the market