Fall 2015, The College of Saint Rose

Lecture 18: Programmed Replication
Date: Wednesday, November 4, 2015

Agenda

• Announcements
• Final Project out
• Lecture 17 assignment recap
• Programmed replication
• recap of previous examples
• loops controlling values other than positions
• loops controlling multiple parameters
• using a loop to construct a Difference
• In-class Exercise 18 - (10 lecture assignment points) due before the end of class.

We will work together in class to develop a model of an "inverted tower" of discs. The model should include a function that adds n discs, each of which is 10 units tall, and is 10 units larger in diameter than the previous, and stacked on top of the previous. An inverted tower of 10 might look like this:

Please demonstrate your program or submit your Python model and image by email before you leave class. Email submissions should use a meaningful subject line, clearly indicating the course number and assignment name.

Due at the start of class, Friday, November 6.

Please submit answers to these questions either as a hard copy (typeset or handwritten are OK) or by email to terescoj AT strose.edu by the start of class. Please use a clear subject line when submitting by email (e.g., CSC 112 Lecture 18 Assignment , Joe Student). We will discuss these questions at the start of class, so no late submissions are accepted.

1. Write a Python loop that prints out the even numbers from 2 up to and including 1000. (5 points)
2. Write a series of Python statements that computes and prints out the sum of the even numbers from 2 up to 1000 by using a loop similar to the one from the previous question. (5 points)
3. Write an Ambrosia model that adds a series of 10 cylinders to the scene. (10 points) The cylinders should have these properties:
• they all sit atop the xz-plane (that is, they all have an axis parallel to the y axis, and all points in the base of each has coordinates y=0)
• each has a base whose diameter is 10, but whose heights vary with position
• the x-coordinates of the center of the bases of the cylinders vary from 10 up to and including 100, and each cylinder's height is equal to the value of its x-coordinate

Examples