Array Deletion at Beginning in DSA Python - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to remove the first element from the list.

DSA Python

arr = [1, 2, 3, 4]
arr.[1]  # Remove first element
print(arr)

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

Aremove(0)

Bdel

Cpop()

Dpop(0)

Attempts:

3 left

💡 Hint

Common Mistakes

Using pop() removes the last element, not the first.

Using remove(0) tries to remove the value 0, not the first element.

Using pop(0) removes the first element from the list.

2fill in blank

medium

Complete the code to delete the first element using the del statement.

DSA Python

arr = [10, 20, 30, 40]
del arr[1]  # Delete first element
print(arr)

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

A(0)

B[0]

C{0}

D<0>

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or curly braces instead of square brackets.

Trying to delete without specifying the index.

The del statement deletes the element at index 0 using square brackets.

3fill in blank

hard

Fix the error in the code to remove the first element correctly.

DSA Python

arr = [5, 6, 7, 8]
arr.[1](arr[0])  # Remove first element
print(arr)

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

Adel

Bpop

Cremove

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using pop with a value instead of an index causes an error.

Using del as a method is incorrect.

The remove method removes the first occurrence of the given value.

4fill in blank

hard

Fill in the blank to create a new list without the first element.

DSA Python

arr = [9, 8, 7, 6]
new_arr = arr[1]  # New list without first element
print(new_arr)

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

A[1:]

B[:1]

C[0:]

D[:]

Attempts:

3 left

💡 Hint

Common Mistakes

Using [:1] returns only the first element, not the rest.

Using [0:] returns the whole list, no deletion.

Slicing with [1:] creates a new list starting from index 1 to the end.

5fill in blank

hard

Fill both blanks to remove the first element and print the updated list.

DSA Python

arr = [100, 200, 300, 400]
arr.[1]([2])  # Remove first element
print(arr)

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

Apop

B0

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove with an index causes an error.

Adding parentheses inside print incorrectly.

Using pop(0) removes the first element. Printing arr shows the updated list.