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  • Code 
    class Box
    attr_accessor :box, :lines, :cols
    def initialize cols, lines
        @lines = lines
        @cols = cols
        @box = []
        for line in 0...@lines do
            row = []
            for col in 0...@cols do
                isEdge = col == 0 || line == 0 || col == @cols - 1 || line == @lines - 1
                row << 'x' if isEdge
                row << ' ' unless isEdge
            end
            @box << row
        end
    end

    def printBox
        for line in 0...@lines do
            str = ''
            for col in 0...@cols do
                str << @box[line][col]
            end
            puts str
        end
    end

    def placeText text, x, y
      textLength = text.length - 1 + x
      letters = text.split ""
      for col in x..textLength do
        @box[y][col] = letters[col-x]
      end
    end
end

box = Box.new 30, 30
box.placeText "Hello World", 10, 10
box.printBox
    Test Cases 
    # TODO: Replace examples and use TDD development by writing your own tests
# These are some of the methods available:
#   Test.expect(boolean, [optional] message)
#   Test.assert_equals(actual, expected, [optional] message)
#   Test.assert_not_equals(actual, expected, [optional] message)

describe "Solution" do
  it "should test for something" do
    actual = 0
    Test.assert_equals(actual, 0, "This is just an example of how you can write your own TDD tests")
  end
end
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