Hello!
I need answers for these java questions please read them before you offer :
1.Write an interactive program that repeatedly prompts the user to enter a number and, once the number -1 is typed, displays the miximum and minimun numbers that the user entered. Here is a sample dialogue: (2-credit)
Type a number (or -1 to stop) : 90
Type a number (or -1 to stop) : 25
Type a number (or -1 to stop) : 17
Type a number (or -1 to stop) : 15
Type a number (or -1 to stop) : -1
Maximum was 90
Minimum was 15
Average is 36.75
If -1 is the first number typed, no maximum or minimum should be printed. The dialogue would look like this.
Type a number (or -1 to stop) : -1
2. Consider the following variable declarations: (2-credit)
int x = 20;
int y= -1;
int z = 11;
boolean a = true;
boolean b = false;
What is the value of each of the following Boolean expressions?
1) !a
2) a || b
3) (x>y) && (y>z)
4) (x==y) || (x>=z)
5) !(x%3!=0) && a
6) !(x/2 == 10) || (a&&b) || (z%5 == 1)
7) a || true
8) (x<0) || (y>=0)
9) b || !b
10) b && !b
3. Using “Boolean Zen,” write an improved (simplified) version of the following method, which returns whether the given String starts and ends with the same character: (2-credit)
public static boolean startEndSame(String str) {
if (str.charAt(0) == str.charAt(str.length()-1)) {
return true;
} else {
return false;
}
} // end of startEndSame()
To submit, write a class, TestWords, which contains main() and startEndSame(). The main() method should call startEndSame() method as follows:
within main(),
System.out.println(“”pop”” returns “” + startEndSame(“”pop””));
System.out.println(“”””top”” returns “” + startEndSame(“”top””));
System.out.println(“”””erase”” returns “” + startEndSame(“”erase””));
System.out.println(“”””stars”” returns “” + startEndSame(“”stars””));
… // test the method with any other words…
4. Write a method called printFactors() that accepts an integer as its parameter and uses a fencepost loop to print the factors of that number
