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Ruby で重複した文字列

Ruby

Posted at 2018-05-02

Ruby 重複文字中

def dupli (d)

    uniqDups = d.uniq
    dups = Array.new
    uniqDups.each { |e|
        if d.grep(e).size > 1
            dups.push(e)
        end
    }
    return dups
end

dup = 'shichimitoucarashi'
p dupli(dup.split(""))

["s", "h", "i", "c", "a"]

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