Guidelines

• Notes, handouts, printed and written material from class or labs
• Textbooks
• The following online resources
  • This semester's web pages (i.e. all pages under http://www.cs.duke.edu/courses/spring09/)
  • Python documentation
  • JES Documentation
  • Myro Documentatrion
  • How to Think Like a Computer Scientist
  • Learning Computing with Robots
  • All files in your own cps001 directory on acpub/WebFiles
  It is UNACCEPTABLE to view the directories or web pages of other students or engage in electronic messaging of any form. You also may not discuss your lab final with any other student who has not taken the lab final. Any impermissible communication constitutes a violation of the Duke Community Standard and will be dealt with as such.

  Problems

  Problem: Sum of Squares

  The sum of squares is the sum of a sequence of numbers up to a specified integer. For example, the sum of squares from 1 to 5 should be 55 because 1² + 2² + 3² + 4² + 5² = 55.

  Given start and end values as integers, write a function, sumSquares, that returns the sum of squares.

  Example runs below:

  >>> sumSquares(1,5) 55 >>> sumSquares(1,1) 1 >>> sumSquares(-4,3) 44

  Problem: Maximum Value

  A common programming task is to find the extreme values (either largest or smallest) in a collection of values.

  Write a function, largestInt, that takes an list of integers and returns the value of the largest element.

  >>> largestInt([5, 1, 4, 7, 3, 2, 6, 0]) 7 >>> largestInt([1, 0, 1, 0, 1, 1, 0, 1, 0, 1]) 1 >>> largestInt([-7, -43, -6, -57, 84, 76, 36, 73, -59, 24]) 84

  Problem: Change Blue

  Write a function called changeBlue that takes as input a picture and an amount to increase or decrease the amount of blue by a specified amount. For example:
  • changeBlue(pict,-10) should decrease the amount of blue in pict by 10%.
  • changeBlue(pict,85) should increase the amount of blue in pict by 85%.
  • changeBlue(pict,0) should not change the color values of pict.

  Submitting

  Submit using Eclipse assignment name lab11.