How do I sort a Ruby array of strings by length?

ruby sorting arrays

arr = arr.sort_by {|x| x.length}

Or in 1.8.7+:

arr = arr.sort_by(&:length)

ruby sorting arrays

You can also use sort:

arr.sort{|x, y| x.length <=> y.length}

ruby sorting arrays

arr = arr.sort{|x,y| x.length - y.length} works too.

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