TuringMinds Data Science Interview Questions and Answers

3 hour oa - binary search , graph , dp

Q1. What is object orinted programing ?
Ans. 
Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object-oriented programming.

• Examples include Java, C++, and Python, which are popular object-oriented programming languages.
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Q2. Write sql query for the bank transaction ?
Ans. 
SQL query to retrieve bank transactions data.
• Use SELECT statement to retrieve data from transaction table.

• Filter data based on account number or transaction date.

• Group data by transaction type or amount for analysis.
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Q1. Basic sql and data science related
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Write java program to reverse each word

Q1. Type of selectors in selenium
Ans. 
Selectors in Selenium are used to identify web elements on a webpage for automation testing.
• Selectors include ID, class name, name, tag name, link text, partial link text, CSS selector, and XPath.

• ID selector is the fastest and most reliable, while XPath is the most powerful but slower.

• CSS selectors are commonly used due to their flexibility and readability.

• Example: driver.findElement(By.id("elementID"));
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Q2. Wait statements in selenium
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Wait statements in Selenium are used to pause the execution of the test script for a specified amount of time.
• Wait statements are used to handle synchronization issues in test automation scripts.

• There are two types of wait statements in Selenium: Implicit Wait and Explicit Wait.

• Implicit Wait sets a default waiting time for the elements to be available before throwing an exception.

• Explicit Wait allows the test script to...read more
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Q3. Program to write fibonacci series
Ans. 
A program to write the Fibonacci series using iterative or recursive methods.
• Use a loop to generate Fibonacci series iteratively

• Use recursion to generate Fibonacci series recursively

• Start with 0 and 1 as the first two numbers in the series

• Add the previous two numbers to get the next number in the series
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Q1. Expectation of salary
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Q1. What is collection frame work
Ans. 
Collection framework is a unified architecture for representing and manipulating collections of objects.
• Provides interfaces (List, Set, Map) and classes (ArrayList, HashSet, HashMap) for storing and manipulating groups of objects

• Offers algorithms for searching, sorting, and manipulating collections

• Promotes code reusability and efficiency in handling collections
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Q2. Write a program to count no of characters in the given string
Ans. 
A program to count the number of characters in a given string.
• Iterate through each character in the string and increment a counter for each character encountered.

• Use a hashmap to store the count of each character for efficient counting.

• Handle edge cases such as empty string or null input.
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Q1. What is product backlog and sprint backlog
Ans. 
Product backlog is a prioritized list of features to be developed. Sprint backlog is a subset of product backlog for a specific sprint.
• Product backlog is a dynamic document that evolves with the product development cycle

• It contains a list of features, enhancements, bug fixes, and other work items

• The items in the backlog are prioritized based on business value, risk, and other factors

• Sprint backlog is a subset of produc...read more
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Q2. What is velocity and zero sprint
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Velocity is the amount of work a team can complete in a sprint. Zero sprint is a sprint with no completed work.
• Velocity is a measure of a team's productivity in completing work during a sprint

• It is calculated by adding up the story points or tasks completed in a sprint

• Zero sprint is a sprint where no work is completed due to unforeseen circumstances or issues

• It is important to track velocity to help plan future sprints
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Q1. Tell me about your resume
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Q1. What would you prioritize in this situation?
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Q1. Oops concepts, java selenium, testing concepts
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Q2. Testng, maven, jenkins, testing concepts, program
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