Generate a sequence of characters from 'A'-'Z'
ascii, character, r, seq, sequence
Solution
Use `LETTERS` and `letters` (for uppercase and lowercase respectively).
Problem
I can make a sequence of numbers like this: ``` s = seq(from=1, to=10, by=1) ``` How do I make a sequence of characters from A-Z? This doesn't work: ``` seq(from=1, to=10) ```