You must submit your own work. For your solutions, only use the concepts taught in this class so far. Start your code with three comment lines explaining what your program does, your name as the author, and today's date. For your code use one file. 1. Define a value-returning function that returns the shortest one of three strings entered as parameters. Solve this without a string traversal algorithml Do not use the min() function. Test your function (i.e. call it several times with different parameters) 2. Define a value-returning function countNonDigits(myString) that counts and returns the number of characters in the string that are not digits (digits are between ' 0 ' and '9) in the myString parameter. (see lecture slide 20 for a similar example.) Call the function (in a print statement) three fimes to test it with different arguments. 3. Define a void function that prints only the lower-case letters of a string given as parameter and skips all other characters. All lower-case characters must be printed in one line Use print(chat, end=7) for printing without a new line. Use the ord 0 function in your solution to check if a letter is a non-capital letter. Call the function (three times) with "alpha", "Alpha' and "67Alphank" as test arguments