Robinhood SDE Intern Interview Questions and Answers

Q1. Manual testing concepts
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Q2. Test scenarios and execution
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Q1. Core java and code
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Q2. Oops concepts and implementation
Ans. 
Oops concepts refer to object-oriented programming principles like inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: Parent class 'Animal' and child class 'Dog'.

• Polymorphism: Ability of an object to take on multiple forms. Example: Method overloading and overriding.

• Encapsulation: Bundling data and methods that operate on...read more
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There were 2 questions in coding one with array and in string releated

Q1. About Selenium questions
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Q2. Other basic questions related to testing
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Q3. Management related question
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Q1. One program to solve
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Q2. Other questions in selenium
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First round was DSA and Projects you worked on.

Second round was DSA, Java and projects worked on

Q1. Why you want to join us?
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Q2. Why you are leaving your current org?
Ans. 
Seeking new challenges and growth opportunities.
• Looking for new challenges and opportunities for growth

• Interested in exploring different technologies and industries

• Seeking a better work-life balance

• Want to work in a more collaborative team environment
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Q1. HR questions strengths weaknesses risks taken
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Q1. Guesstimate why startup
Ans. 
Startups are innovative, agile, and have the potential for rapid growth.
• Startups are able to quickly adapt to market changes and customer needs.

• They have the potential for high growth and scalability.

• Startups often focus on disruptive technologies or business models.

• They are usually founded by entrepreneurs with a vision for solving a specific problem or meeting a market need.
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Q1. How would you rate your proficiency in data analysis?
Ans. 
I rate my proficiency in data analysis as advanced.
• Proficient in using statistical software such as R and Python for data analysis

• Experienced in cleaning and organizing large datasets

• Skilled in creating data visualizations to communicate insights

• Have successfully completed data analysis projects during my academic studies
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Q2. Can you provide an example of how you have utilized Excel to enhance a process or improve efficiency?
Ans. 
Yes, I used Excel to automate data entry and analysis for a research project.
• Created macros in Excel to automatically import and organize data from multiple sources

• Used pivot tables and charts to analyze and visualize data trends

• Implemented conditional formatting to quickly identify outliers and discrepancies

• Saved time by setting up formulas for calculations and generating reports
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Q3. What is the average number of flights that take off daily from Delhi Airport?
Ans. 
The average number of flights that take off daily from Delhi Airport is approximately 1,300.
• Approximately 1,300 flights take off daily from Delhi Airport.

• The number of flights can vary depending on the day of the week and time of year.

• Delhi Airport is one of the busiest airports in India, serving both domestic and international flights.
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Q4. What is the average monthly consumption of tea in Mumbai?
Ans. 
The average monthly consumption of tea in Mumbai is approximately 3-4 kg per person.
• The average monthly consumption of tea in Mumbai varies depending on individual preferences and habits.

• Tea is a popular beverage in Mumbai, with many people consuming multiple cups a day.

• Factors such as age, gender, and socio-economic status can also influence tea consumption in Mumbai.
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2 question of DSA (easy, medium) in 60 minutes

Q1. Playlist Shuffle
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Q2. Deletion in min heap
Ans. 
Deletion in min heap involves removing the root node and rearranging the heap to maintain the min heap property.
• To delete the root node in a min heap, swap it with the last node in the heap.

• Remove the last node and then heapify the heap starting from the root to maintain the min heap property.

• Example: If the min heap is [10, 20, 30, 25, 40], after deletion the heap becomes [20, 25, 30, 40].
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Q1. Trapping Rain Water
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Q2. Merge Intervals
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Q3. Design a Customer Support Chat Application System
Ans. 
A customer support chat application system for efficient communication and problem-solving.
• Implement live chat functionality for real-time communication

• Include automated responses for common queries

• Integrate ticketing system for tracking and resolving issues

• Provide chat history for reference and continuity

• Ensure data security and privacy measures are in place
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