campus_cup.rb

def campusCup(emails)
    array_length = emails.length
    x = 0
    new_array = Array.new


    while (x < array_length)
          array = emails[x].split('@')
          new_array[x] = array[1]
          x = x + 1
    end

    new_array = new_array.each_with_object(Hash.new(0)) {|word, counts| counts[word] += 1}

    keys = new_array.keys
    values = new_array.values
    array_length = values.length
    final_array = Array.new(60){Array.new}
    x = 0

    while (x < array_length)
        if values[x] <= 4 then
           final_array[x][0] = keys[x]
           final_array[x][1] = 5
        end

        if values[x] >= 5 and values[x] <= 9 then
           final_array[x][0] = keys[x]
           final_array[x][1] = 4
        end

        if values[x] >= 10 and values[x] <= 14 then
           final_array[x][0] = keys[x]
           final_array[x][1] = 3
        end

        if values[x] >= 15 and values[x] <= 24 then
           final_array[x][0] = keys[x]
           final_array[x][1] = 2
        end

        if values[x] >= 25 then
           final_array[x][0] = keys[x]
           final_array[x][1] = 1
        end

        x = x + 1
    end

   final_array = final_array.delete_if {|elem| elem.flatten.empty?}
   final_array = final_array.sort {|a, b| (a[1] <=> b[1]) == 0 ? (a[0] <=> b[0]) : (a[1] <=> b[1])}

   final = Array.new
   array_length = final_array.length
   x = 0

   while (x < array_length)
         final[x] = final_array[x][0]
         x = x + 1
   end

   return final
end