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Created June 18, 2012 13:29
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gistfile1.txt
1.9.3p0 :048 > a
=> ["a", "a", "b", "a", 1, 2, 3, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6]
1.9.3p0 :049 > a.group_by {|e| e}.sort_by {|k,v| v.size}
=> [[3, [3]], ["b", ["b"]], [1, [1]], [2, [2]], [5, [5]], [4, [4]], ["a", ["a", "a", "a"]], [6, [6, 6, 6, 6, 6, 6, 6, 6, 6]]]
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