2.9 Introduction to Lists

A train is either

(p.s. a train is a list)

a car or caboose

2.9.1 Objectives

2.9.2 Exercises (due 2011/10/12 08:45:00)

1. Write a data definition for a list of numbers. Write product that consumes a list of numbers and produces the product of the numbers.

2. Use the data definition for lists of strings from class and create a list of colors that contains at least 5 colors.

3. Use your list of numbers data definition and write a function called containsFiveHuh that returns true if the number list contains 5.

4. Use your list of numbers data definition and write a function called allEvenHuh that returns true if the number list contains only even numbers.

5. Make a data definition of lists of booleans. Write a function called allTrueHuh that is true when all the booleans in a list are true.

6. Use your list of strings data definition and write a function called longestColourLength that returns the length of longest color in the the list. (max and strlen may be useful.)

2.9.3 Optional Exercises (due 2011/10/17 08:45:00)

7. Using your list of numbers, write numLength that finds the length of a list of numbers.

8. Using your list of strings, write containsRed that returns true if "red" is in the list of strings. (Remember about streq)

9. Using your list of booleans, write anyFalse that returns true if a list of booleans contains any false booleans.

2.9.4 Notes

These notes are primarily for my sake, but I don’t see any reason to hide them from you.