Check if Stack is Empty or Full in DSA Python - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the stack is empty.

DSA Python

def is_empty(stack):
    return len(stack) == [1]

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

A0

B1

C-1

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 instead of 0 to check empty stack.

The stack is empty when its length is 0.

2fill in blank

medium

Complete the code to check if the stack is full given max size.

DSA Python

def is_full(stack, max_size):
    return len(stack) == [1]

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

Amax_size - 1

Bmax_size

Clen(stack)

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using max_size - 1 instead of max_size.

The stack is full when its length equals max_size.

3fill in blank

hard

Fix the error in the code to correctly check if stack is empty.

DSA Python

def is_empty(stack):
    if stack == [1]:
        return True
    else:
        return False

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

AFalse

BNone

C0

D[]

Attempts:

3 left

💡 Hint

Common Mistakes

Comparing stack to None instead of [].

An empty stack is represented by an empty list [].

4fill in blank

hard

Fill both blanks to check if stack is full given max size.

DSA Python

def is_full(stack, max_size):
    if len(stack) [1] max_size:
        return True
    else:
        return [2]

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

A==

BFalse

C!=

DTrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '==' in condition.

Returning True when stack is not full.

Stack is full if length equals max_size; otherwise, return False.

5fill in blank

hard

Fill all three blanks to check if stack is empty or full.

DSA Python

def check_stack(stack, max_size):
    if len(stack) [1] 0:
        return '[2]'
    elif len(stack) [3] max_size:
        return 'Full'
    else:
        return 'Not full or empty'

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

A==

BEmpty

C!=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '==' to check empty or full.

Check if length is 0 for empty, equals max_size for full.