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Excersise Set 2 (Part 2)

Here are some more excersises to help you with your code tracing.

Part 2 Answers
If the original picture looks like this External Image,

Match these pictures to the code that created them when it was run on the original picture.
(A) External Image (B) External Image (C) External Image(D) External Image (E) External Image
(1)
def changeColorSquares(file):
  picture = makePicture(file)
  show(picture)

  for pixel in getPixels(picture):
    r = getRed(pixel) 
    g = getGreen(pixel)
    b = getBlue(pixel)

    average = (r + g + b)/3
    new_color = makeColor( average, average, average )
    setColor(pixel, new_color)

  repaint(picture)

(2)
def changeColorSquares(file):
  picture = makePicture(file)
  show(picture)

  for pixel in getPixels(picture):
    setRed(pixel, 0)

  repaint(picture)

(3)
def changeColorSquares(file):
  picture = makePicture(file)
  show(picture)

  for pixel in getPixels(picture):
    setGreen(pixel, 255)
    setBlue(pixel, 255)

  repaint(picture)

(4)
def changeColorSquares(file):
  picture = makePicture(file)
  show(picture)

  for pixel in getPixels(picture):
    setGreen(pixel, 0)

  repaint(picture)

(5)
def changeColorSquares(file):
  picture = makePicture(file)
  show(picture)

  for pixel in getPixels(picture):
    setRed(pixel, 255)
    setBlue(pixel, 255)

  repaint(picture)

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