Log in
Sign up for FREE
arrow_back
Library
Semester Final CS3 (1/11/2024)
By Mickey Arnold
star
star
star
star
star
Share
share
Last updated almost 2 years ago
16 questions
Add this activity
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Question 1
1.
What is output by the code below?
String[] ray;
ray = new String[4];
System.out.println( ray[0] );
one
Question 2
2.
What is output by the code below?
Integer[] ray;
ray = new Integer[4];
System.out.println( ray[3] );
2
Question 3
3.
What is output by the code below?
Integer[] ray;
ray = new Integer[4];
ray[1] = null;
ray[0] = new Integer(3);
ray[2] = new Integer(99);
System.out.println( ray[2] );
Question 4
4.
What is output by the code below?
Integer[] ray = {11,55,-4,909};
System.out.println( ray[3] );
0
11
Question 5
5.
What is output by the code below?
Double[] ray = {11.2,55.0,-4.5,909.0};
System.out.println( ray[1] );
55.0
909.0
Question 6
6.
What is output by the code below?
Double[] ray = {11.2,7.2,-4.5,909.0};
ray[1] = new Double(55.0);
System.out.println( ray[1] );
-4.5
Question 7
7.
What is output by the code below?
Double[] ray = {3.2,5.7,6.3,1.9};
double x = 0;
for( double r : ray )
x += r;
System.out.println( x );
Question 8
8.
What is output by the code below?
Double[] ray = {3.1,5.2,6.3,1.4};
for( double r : ray )
r = 0;
System.out.println( ray[2] );
0.0
Question 9
9.
What is output by the code below?
String[] ray;
ray = new String[4];
ray[1] = "one";
System.out.println( ray[1] );
0
Question 10
10.
What is output by the code below?
String[] ray;
ray = new String[4];
ray[1] = "one";
ray[2] = "two";
ray[3] = "three";
System.out.println( ray[0] );
Question 11
11.
What do you call the condition that stops recursion?
base case
return
break
Question 12
12.
22
29
37
16
Question 13
13.
16
22
11
37
Question 14
14.
What is returned by the call
fun(8) ?
public static int fun(int x){
if(x < 1)
return 1;
else
return x + fun(x - 2);
}
Question 15
15.
What is returned by the call
fun(6) ?
public static int fun(int x){
if(x < 1)
return 1;
else
return x + fun(x - 2);
}
Question 16
16.
20
30
0
8
two
null
three
0
3
0
null
1
4
0
null
3
99
-4
55
909
-4.5
11.2
0
11.2
55.0
909.0
0
17.1
17.2
16.4
17.4
16.8
3.1
6.3
5.2
1.4
null
one
three
two
one
0
two
null
three
shut it down
stop
What is returned the call
fun(6) ?
public static int fun(int x)
{
if(x < 1)
return 1;
else
return x + fun(x - 1);
}
11
What is returned by the call
fun(8) ?
public static int fun(int x)
{
if(x < 1)
return 1;
else
return x + fun(x - 1);
}
29
21
17
31
26
13
21
31
13
26
17
What is returned by the call
fun(10) ?
public static int fun(int x)
{
if (x < 1)
return x;
else
return x + fun(x - 2);
}
12