FREE Coding Fundamentals Questions and Answers

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What is the time complexity of searching for an element in a balanced binary search tree (BST)?

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In a balanced BST, each level of the tree divides the search space in half, resulting in a logarithmic time complexity for search operations.

Which SQL query retrieves all rows from a table named employees where the salary is greater than 5000?

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The SELECT * command fetches all columns from the employees table, and WHERE salary > 5000 filters rows with salaries greater than 5000.

Which CSS property is used to create space between the element's content and its border?

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The padding property defines the space between an element's content and its border. Margin creates space outside the border, while border-spacing applies to table cells.

Which Python library is primarily used for data manipulation and analysis?

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Pandas is a Python library designed for data manipulation and analysis. It provides data structures like DataFrames for handling and analyzing structured data.

Which HTTP status code indicates that the resource was not found?

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The HTTP status code 404 means "Not Found," indicating that the server couldn't find the requested resource. Other options represent different statuses (200 is OK, 301 is redirect, and 500 is a server error).