title: Easiest way to assign a number to the alphabet?
body: <p>I need to find the best way to assign each letter of the alphabet a random number 1-26 (using each number once). Or assign each number 1-26 a random letter of the alphabet (using each letter once).
  For example:
  a = 6, b = 12, c = 91
  or
  1 = g, 2 = a, 3 = k</p>
  
  <p>I've tried assigning randint to each letter and repeating if the number has been used already but its really long.</p>