Saturday, 30 November 2019

ruby - Generate pseudo random string A-Z, 0-9



How can I generate an n-character pseudo random string containing only A-Z, 0-9 like SecureRandom.base64 without "+", "/", and "="? For example:



(0..n).map {(('1'..'9').to_a + ('A'..'Z').to_a)[rand(36)]}.join

Answer



Array.new(n){[*"A".."Z", *"0".."9"].sample}.join

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