Generate Unique Random String With Letters And Numbers In Lower Case

Question

How can I fix this code so it generates unique random letters and numbers in lower case?

api_string = (0...32).map{65.+(rand(25)).chr}.join    

Answer 1

using SecureRandom of ruby language.

require 'securerandom' randomstring = SecureRandom.hex(5)

It will generate the n*2 random string contains “0-9″ and “a-f”