Harmony Data Integration Technologies Interview Questions and Answers

Code to delete duplicate nodes in a sorted linked list

• Traverse the linked list and compare adjacent nodes

• If nodes are equal, delete one of them

• Repeat until all duplicates are removed

Printing all root to leaf paths in a binary search tree

• Traverse the tree recursively and keep track of the current path

• When a leaf node is reached, add the current path to the list of paths

• Print all the paths in the list

• Use an array of strings to store the paths

Find two integers in an array whose sum is closest to zero.

• Sort the array in ascending order.

• Initialize two pointers at the beginning and end of the array.

• Move the pointers towards each other until the sum is closest to zero.

Count set bits in a 32-bit integer in linear time

• Use bit manipulation to count set bits

• Divide the integer into 16-bit chunks and count set bits in each chunk

• Use lookup tables to count set bits in each 8-bit chunk

• Use parallel processing to count set bits in multiple integers simultaneously

To determine the width of a binary tree using breadth-wise traversal, we need to count the number of nodes at each level.

• Perform a breadth-first traversal of the binary tree

• Count the number of nodes at each level

• Keep track of the maximum number of nodes seen at any level

• Return the maximum number of nodes seen

Files are preferred over databases for certain types of data and applications.

• Files are faster for small amounts of data.

• Files are easier to manage and backup.

• Files are more flexible for certain types of data, such as images or videos.

• Databases are better for complex data relationships and queries.

• Databases are more secure and scalable for large amounts of data.

• The choice between files and databases depends on the spec

Data structures are a way to organize and store data efficiently.

• Data structures are used to store and manipulate data in a structured manner.

• They provide different ways to access and perform operations on the data.

• Examples include arrays, linked lists, stacks, queues, trees, and graphs.

Developed a web-based project management tool for tracking tasks and deadlines

• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database management

• Incorporated user authentication and authorization features

• Integrated real-time notifications using Socket.io

My name is John Smith.

• Full name is John Smith

• Common name in English-speaking countries

• Easy to remember and pronounce

The question is unrelated to the medical field and is not a puzzle or riddle.

• The question is asking about the meaning of the interviewer's name.

• You can ask the interviewer about the origin or cultural significance of their name.

• You can also mention that names often have different meanings in different languages or cultures.

My strengths include problem-solving skills, attention to detail, and strong communication abilities.

• Strong problem-solving skills - I enjoy tackling complex issues and finding creative solutions.

• Attention to detail - I am meticulous in my work and strive for accuracy in all tasks.

• Strong communication abilities - I can effectively convey ideas and collaborate with team members.

I know multiple programming languages including Java, Python, and C++.

• Proficient in Java with experience in developing web applications using Spring framework

• Familiar with Python for data analysis and machine learning

• Experience in C++ for developing high-performance applications

• Also familiar with HTML, CSS, and JavaScript for front-end development

Class is a blueprint for creating objects, encapsulation is the process of hiding data and methods within a class.

• Class is a template or blueprint that defines the properties and behaviors of an object.

• Encapsulation is the process of bundling data and methods together within a class, hiding the internal details from the outside world.

• Other features of OOP include inheritance, polymorphism, and abstraction.

• Inheritance a...read more

Program to find the sum of squares of each term of Fibonacci series

• Generate Fibonacci series using loop or recursion

• Calculate square of each term

• Add all squares to get the sum

I would like to join Cognizant because of its reputation as a leading global technology and consulting company.

• Cognizant has a strong presence in the industry and is known for its innovative solutions.

• I am impressed by Cognizant's commitment to digital transformation and its ability to deliver value to clients.

• The company offers excellent career growth opportunities and a supportive work environment.

• Cognizant's diverse...read more

A C code that prints out the elements of an array of strings.

• Declare an array of strings

• Use a loop to iterate through the array

• Print out each element

The probability of rain in Chennai today depends on various factors such as season, weather conditions, and location.

• The probability can be estimated by analyzing the current weather patterns and historical data.

• Factors such as humidity, temperature, and wind speed can affect the probability of rain.

• Local weather forecasts and satellite imagery can also provide insights into the likelihood of rain.

• The probability of ra...read more

It is impossible to accurately predict the probability of India winning the next Cricket World Cup.

• Sports events are unpredictable and depend on various factors such as team performance, weather conditions, injuries, etc.

• Past performance of the team and individual players can be considered, but it does not guarantee future success.

• Other teams participating in the tournament also play a significant role in determining t...read more