Introduction to Parameters and Objects - Building Java Programs: A Back to Basics Approach - page 181

m. 13 + Math.abs(-7) - Math.pow(2, 3) + 5
n. Math.sqrt(16) * Math.max(Math.abs(-5), Math.abs(-3))
o. 7 - 2 + Math.log10(1000) + Math.log(Math.pow(Math.E, 5))
p. Math.max(18 - 5, Math.ceil(4.6 * 3))

11. What output is produced by the following program?

1 public class MysteryReturn {
2 public static void main(String[] args) {
3 int x = 1, y = 2, z = 3;
4 z = mystery(x, z, y);
5 System.out.println(x + " " + y + " " + z);
6 x = mystery(z, z, x);
7 System.out.println(x + " " + y + " " + z);
8 y = mystery(y, y, z);
9 System.out.println(x + " " + y + " " + z);
10 }
11
12 public static int mystery( int z, int x, int y) {
13 z--;
14 x = 2 * y + z;
15 y = x - 1;
16 System.out.println(y + " " + z);
17 return x;
18 }
19 }

12. Write a method called min that takes three integers as parameters and returns the smallest of the three values; for
example, a call of min(3, -2, 7) would return 2, and a call of min(19, 27, 6) would return 6. Use

Math.min to write your solution.

13. Write a method called countQuarters that takes an int representing a number of cents as a parameter and returns
the number of quarter coins represented by that many cents. Don't count any whole dollars, because those would be
dispensed as dollar bills. For example, countQuarters(64) would return 2, because 64 cents is equivalent to 2 quar-
ters with 14 cents left over. A call of countQuarters(1278) would return 3, because after the 12 dollars are taken
out, 3 quarters remain in the 78 cents that are left.
Section 3.3: Using Objects

14. Assuming that the following variables have been declared:

String str1 = "Q.E.D.";
String str2 = "Arcturan Megadonkey";
String str3 = "Sirius Cybernetics Corporation";
evaluate the following expressions:
a. str1.length()
b. str2.length()
c. str1.toLowerCase()