Transcript xiaoyanDiscussion1

CS102--Object Oriented Programming
• Discussion 1:
– Project 4 on Page 328
– The use of arrays
Copyright © 2008 Xiaoyan Li
Project 4 on Page 328
• Classes
• Instance variables
• Methods
Project 6 on Page 409
•
•
Write a program that reads numbers from the keyboard into an array of type
int[]. You may assume that there will be 50 or fewer entries in the array. Your
program allows any number of numbers to be entered, up to 50 numbers. The
output is to be a two-column list. The first column is a list of the distinct array
elements; the second column is the count of the number of occurrences of each
element. The list should be sorted on entreis in the first column, largest to
smallest.
Example array input : -12 3 -12 4 1 1 -12 1 -1 1 2 3 4 2 3 -12
The output should be:
N count
4
2
3
3
2
2
1
4
-1
1
-12 4
Exercise1:
A student takes 5 courses this semester. write a program that
read her scores from the keyboard, output her scores from the
highest to the lowest and her average score.
Exercise2:
There are 5 registered students in our class. Each takes 4
courses this semester. Write a program that read scores from
the keyboard, calculate the average score for each student
and output the average scores from the highest to the lowest.
Announcement
• Next Lecture: Inheritance
• Reading assignment: Chapter 7