Rust Taskbook Level 7.6

Make a function that takes a date in the format year-month-day as a parameter and determines whether such a date exists or not.

Make a function that will take seconds as a parameter and return the number of days corresponding to these seconds.

Create a function that will generate a string of a given length filled with random Latin letters.

Make a function that will receive a string of words as a parameter and return an uppercase string consisting of the first letters of the words.

Make a function that takes an array of numbers as a parameter and replaces each number with an array of its divisors.