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Write a function that tabulates CSV rows.

Write a function that translates Roman numerals [1] into decimal numbers.

Write a function that multiplies two integers using the "Russian peasant multiplication" algorithm.

Implement a function to reformat a text. Function signature:

Develop a function that counts the number of characters in a string.

Develop a function that counts the lines of code (LOC) in a well-formed C# source code.

Write a function that returns the numbers from 1 to 100.

Develop a function that recognizes whether a number is "happy" or not.

Write a function to guarantee a file path to be absolute, e.g.

Implement a function to translate mail followup email addresses into dates and times.

Write a function that encrypts a text using the ROT-13 method.

Write a function that returns a christmas tree with ASCII type "drawn" as text.

Write a function that converts a specially formatted string into a dictionary.