Java Arrays Quiz

What is the general form of a one-dimensional array declaration in Java?

• type var-name();

• type[] var-name;

• type var-name{};

• type var-name[];

How can you access Java array elements using a for loop?

• By using a switch statement

• By using a for-each loop

• By using a while loop

• By using a do-while loop

What is the time complexity of accessing Java arrays using a for loop?

• O(n^2)

• O(log n)

• O(n)

• O(1)

How is an array of objects created in Java?

• Using a queue

• Using an array of primitive-type data items

• Using a linked list

• Using a stack

What is the output of the Java program given in the implementation example?

• Array Size:7

• Array Size:4

• Array Size:5

• Array Size:6

What is the auxiliary space complexity of creating an array of objects in Java?

• O(n^2)

• O(log n)

• O(n)

• O(1)

How are elements in an array allocated in Java?

• Automatically initialized to random values

• Automatically initialized to null

• Automatically initialized to one

• Automatically initialized to zero

What is the purpose of the new keyword when creating an array in Java?

• To delete the array

• To allocate memory for the array

• To print the array

• To access array elements

What is the difference between arrays in Java and C/C++?

• Arrays in Java are statically allocated

• Arrays in Java are dynamically allocated

• Arrays in Java do not support random access

• Arrays in Java do not store contiguous memory

How can you declare an array of objects in Java?

• datatype arrName{};

• datatype [] arrName;

• datatype arrName();

• datatype arrName[];