Make a program that parse a CSV file and apply the following rules:

• X, Y and Z combinations must be unique
• If X, Y or Z is below 0, set it to 0

Errors should be printed to stderr

Example data is located in test_data/

• Write unit tests that proves your solution works
• Make the program compute the area of a triangle with the side lengths X, Y and Z for every row

1. Write a function that reverses the characters of a string.
2. Write a function that reverses the words(separated by spaces) of a string.
3. Write a function that prints the numbers from 1 to 100. But for multiples of 3 print “Fizz” and for the multiples of 5 print “Buzz”. For numbers which are multiples of both 3 and 5, print “FizzBuzz”.
4. Write a function that calculates the angle between the hour and minute hands on a clock.
5. Write a function that hash a password to be stored in a database.