
Exploring Computer Science
Authored by Charles Martinez
Computers
10th - 12th Grade

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is FALSE about arrays on Java
A java array is an object
Length of array can be changed after creation of array
Numerical data types of arrays are initialized to 0 to start
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Find the output
class Test {
public static void main(String args[]) {
int arr[2];
System.out.println(arr[0]);
System.out.println(arr[1]);
}
}
Compile error
Exception
Garbage Value
Garbage Value
0
0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Find the output
class Test {
public static void main(String args[]) {
int [ ] arr = new int[2];
System.out.println(arr[0]);
System.out.println(arr[1]);
}
}
Compile error
Exception
Garbage Value
Garbage Value
0
0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the length of the following array: int [] data = { 12, 34, 9, 0, -62, 88 };
1
5
6
12
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Output of following Java program?
class Test{
public static void main (String[] args) {
int [] arr1 = {1, 2, 3};
int [] arr2 = {1, 2, 3};
if (arr1 == arr2)
System.out.println("Same");
else
System.out.println("Not same");
}}
Same
Not same
Error
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
_________________ is a collection of elements used to store the same type of data.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the indexes for the array ar, given the following declaration:
int[] ar = {2, 4, 6, 8 }
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