Solve: String Is Alphabetic

Created By: Pranav Narayanan

/ Version: 2025.2.0

Write a function that, given a String, returns true if it contains only alphabetic characters, and false otherwise.

For example, given "abc", you would return true. Given "ab12", you would return false. For simplicity, spaces are considered non-alphabetic, so "ab c" would return false.

You may find the documentation on String.matches() useful. You may have to look into how to use regular expressions.