I have no idea on how to go about solving this! Help would you appreciated :(
Letter frequency analysis. Write a function or series of function that
when used will create a letter frequency analysis file. The function should
take a string as a parameter. It should process this string one character
at a time. The function(s) should create and output a file containing the
string analyzed and letter frequency analysis of that string. Your
frequencies should add up to 1.0 or 100% depending on implementation.