CMSC 104, Spring 2008

Homework 2

Basic Algorithms

Out: Tuesday, February 21
Due: Tuesday, February 28, at the beginning of class
Note that late projects will NOT be accepted.

The Objectives

• To practice solving problems in a generic manner
• To practice writing basic pseudocode for the solution of a problem

The Assignment

• The answer to each problem will have two parts: the specific solution and the general solution.
• First solve each of the two problems shown below. You should show the specific answer to the problem using the numbers given. (25 points each, so make sure you show your work, no matter how simple you think it is)
• Then write an algorithm for each of these two problems in pseudocode.(25 points each)
  1) Ms. Match went to a store, spent half of her money and then $ 10 more. She went to a second store, spent half the money she had left and then $ 10 more. She then had no money left. How much money did Ms. Match have when she started out ?

  Tips about problem # 1 :

  • You should solve this problem using the "working backwards" technique we discussed in class. Hint: You probably want to use a consider using a while loop.
  • Ms. Match must always have no money left at the end.
  • The user should specify the number of stores.
  • The user should specify the "amount more" that Ms. Match spends at each store, but it will be the same amount at every store.

  
  

  2) Your grade in CMSC104 is based on the following:

  
   3 Homeworks (4% each) = 12%
   4 Projects  (7% each) = 28%
   3 Exams    (20% each) = 60%
  
   Total = 100%
  		

  If you have the following homework, project and exam grades at the end of the semester, calculate your final grade for the course:

       Homework 1 = 100/100  Project 1 =   87/100    Exam 1 = 95/100
       Homework 2 = 100/100  Project 2 =   75/100    Exam 2 = 80/100
       Homework 3 =  70/100  Project 3 =   90/100    Exam 3 = 85/100
                             Project 4 =   80/100     
  		

  Tips about problem # 2 :

  • You should allow the user to enter in each of the homework, project and exam grades individually.
  • You can assume the percentages will always be 4%, 7% and 20%. You should not ask the user to enter in these values.
  • Each grade will always be out of 100.

Last Modified: