(MEDIUM) Given an input String str, return an int array of length len which is constructed as follows:

1) the numeric value of the first character of str is added to the first element of the array

2) assuming that str contains 2+ characters, the numeric value of the second character of str is added to the second element of the array, or the first element (index 0) if len is 1

3) the numeric value of the nth character of str (index n-1) is added to the nth element of the array, unless len<n in which case you wrap around.

With this algorithm, any length of input can be hashed into an output with a fixed length. Also, the numeric value of a char for this problem is not "adjusted" to begin with 'A'==1 like with Caesar ciphers: it is simply the numeric equivalent of the char itself.

HINT

Use the remainder operator % to "wrap around."