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- Problem 1:
- How many different values could the following expression take on if parentheses are added?
2*3+4/2
- Problem 2:
- In Maple, if Digits:=3; then what are the results of the following commands?
> 1010 + 3;
> 1010 + 3.0;
> 51.3 + 1.05;
- Problem 3:
- In Java, what is the result of the following two lines?
String s = "why java?";
print( s.substring(0, s.length()));
- Problem 4:
- Part (a): In Java, what is the value of y if
y = "2+2" + 2;
Part (b): In Maple, what is the value of y if
> y := `2+2` + 2; # Those are left-quotes.
- Problem 5:
- In Maple, if x is a list, describe what the following command does, and how it does it.
> x := [ seq( op(i,x), i=2 .. nops(x) ), op(1,x) ];
- Problem 6:
- In Maple, what is the output of the following two commands?
> x := [ 1, [2, 3, 4], [5, [6,7]], 8, [9]]:
> op(2, op(3,x));
- Problem 7:
- In Maple, what is the output for each of the following command?
> nops( [1, 2, [3, [4, 5]], 6, [7]] );
> nops( x^2-3*x+2 );
- Problem 8:
- In Maple, enter the commands
> x := 2: y := 3:
> z := 'x' + y: # Those are right-quotes.
> x := 4:
> z;
What is the output from the last command?
- Problem 9:
- In Java, find three syntax errors in the following program.
public class Incorrect
{public static void main(String[] args)
{ x = 3;
System.out.println("the value of x is" x),
System.out.println("is that OK?);
}
- Problem 10:
- In Maple, what is the output of the following command?
> seq( seq( i+j, i=1..2), j=3..4);
- Problem 11:
- In Java, if x is an integer, and I wish to convert it to a string, what is wrong with the following line?
x = "" + x;
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These are review problems for the exam on March 10. The problems on the in class exam will be very similar. The exam covers Maple, and Chapter 2 of the Java textbook. Try to do these problems without the use of Maple or Java, since you will have to do the in class exam without them.