Post-5

Review Modules 6 and 7. Include in your review the parts we did not cover in class.
Complete all in-class exercises in Modules 6 and 7.
Read through sections 2.1 and 2.2 of the textbook again (you did part of this in Post-4).
Do the self-check exercises 1, 2a, 2b, 9, 11, 16 in Chapter 2, on pages 117-120 of the textbook.
Write a program called SumOfMultiples.java that, given a number n, prints the sum of: all multiples of 3 that are less than or equal to n. Thus, if n has the value 15, the multiples of 3 of interest are: 3, 6, 9, 12, 15, The sum of these is: 3+6+9+12+15 or 45. Thus, if your program looked like this (only the code inside main is shown):
```
  int n = 15;
  int sum = 0;

  // ... your code here ... 

  System.out.println (sum);       // Should print 45.
```
The result seen on the screen should be 45. Hint: look at Module 6 and how we printed odd numbers. Then, modify that code to sum up odd numbers. Now, can you change this to sum up multiples of 3?
Write a program called ProductSumDifference.java that takes two integers a and b, with a < b, and computes the the value
```
   (a(a+1)(a+2) ... (b-1)b) - (a + (a+1) + .... + (b-1) + b).
```
In other words, what is the product of all numbers between a and b (including a and b)? And what is the sum of these numbers? The desired output is the product minus the sum. For example, if a=3 and b=7, the product-sum difference becomes
```
   (3 * 4 * 5 * 6 * 7) - (3 + 4 + 5 + 6 + 7) = 2520 - 25 = 2495.
```
Thus, your program should print out 2495.
Your program should define variables a and b so that their values can be changed when we test your programs. Thus, your code inside main will start like this:
```
  int a = 10;
  int b = 15;

  // ... your loops etc here ...

  // Then print the desired output.
```
You ought to test your program by trying out different values of a and b.
In-class exercises: all in-class exercises in Module 6, and exercises 1-11 in Module 7. Please upload your zip files into BB.
Don't forget your reflection exercise!

Submission: For this assignment, we'll use Blackboard (BB) for submission. Go to assignments and then to post-5. Upload both your Java programs in a single zip file.

Recommended, but not required:

Take a look at these brief video clips on robots. Which do you think was the most sophisticated or most challenging to build?
One of the oldest and most frequent uses of robotics is in factory automation. What are some of the more unusual uses of robots today? Try to find commercial robots that are being used in unusual ways or for unusual applications.