Stack memory in Java - Interactive Code Practice

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Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a stack of integers using Java's Stack class.

Java

Stack<Integer> numbers = new [1]<>();

🎯 Drag options to blanks, or click blank then click option

AArrayList

BStack

CLinkedList

DHashSet

Attempts:

3 left

2fill in blank

medium

Complete the code to add an element to the top of the stack.

Java

numbers.[1](10);

🎯 Drag options to blanks, or click blank then click option

Apush

Badd

Cinsert

Doffer

Attempts:

3 left

3fill in blank

hard

Fix the error in the code to remove the top element from the stack.

Java

int top = numbers.[1]();

🎯 Drag options to blanks, or click blank then click option

Apoll

Bremove

Cpop

Ddelete

Attempts:

3 left

4fill in blank

hard

Fill both blanks to check if the stack is empty and print a message.

Java

if (numbers.[1]()) {
    System.out.println("Stack is [2].");
}

🎯 Drag options to blanks, or click blank then click option

AisEmpty

Bempty

Cfull

Dclear

Attempts:

3 left

5fill in blank

hard

Fill all three blanks to create a stack, push two elements, and pop one.

Java

Stack<String> stack = new [1]<>();
stack.[2]("apple");
stack.[3]();

🎯 Drag options to blanks, or click blank then click option

AStack

Bpush

Cpop

Dadd

Attempts:

3 left