How to sort a string's characters alphabetically?

The chars method returns an enumeration of the string's characters.

str.chars.sort.join#=> "Sginrt"

To sort case insensitively:

str.chars.sort(&:casecmp).join#=> "ginrSt"

ruby string sorting

Also (just for fun)

str = "String"str.chars.sort_by(&:downcase).join#=> "ginrSt"

ruby string sorting

str.unpack("c*").sort.pack("c*")

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