ruby - How to sort a string's characters alphabetically?

Question

For Array, there is a pretty sort method to rearrange the sequence of elements. I want to achieve the same results for a String.

For example, I have a string str = "String", I want to sort it alphabetically with one simple method to "ginrSt".

Is there a native way to enable this or should I include mixins from Enumerable?

Answer 1

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"