Array Deletion at End in DSA Python - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

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

DSA Python

arr = [1, 2, 3, 4, 5]
arr.[1]()
print(arr)

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

Aclear

Bpop

Cdelete

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove() which needs a value, not an index.

Using clear() which empties the whole list.

The pop() method removes the last item from the list.

2fill in blank

medium

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

DSA Python

arr = [10, 20, 30, 40]
del arr[1]
print(arr)

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

A[1]

B[0]

C[-1]

D[:1]

Attempts:

3 left

💡 Hint

Common Mistakes

Using positive indices which delete the first or wrong element.

Using slice notation which deletes multiple elements.

Using del arr[-1] deletes the last element by index.

3fill in blank

hard

Fix the error in the code to remove the last element safely.

DSA Python

arr = []
if arr:
    arr.[1]()
print(arr)

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

Apop

Bremove

Cclear

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove() which needs a value and causes error if list is empty.

Using clear() which empties the whole list.

Using pop() inside a check ensures no error if the list is empty.

4fill in blank

hard

Fill both blanks to remove the last element and print it.

DSA Python

arr = [5, 6, 7]
last = arr[1]()
print([2])

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

Apop

Blast

Carr

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Printing the list instead of the removed element.

Using remove() which needs a value.

pop() removes and returns the last element, which is stored in last.

5fill in blank

hard

Fill all three blanks to remove the last element by index and print the updated list.

DSA Python

arr = [9, 8, 7, 6]
index = [1]
removed = arr.[2](index)
print([3])

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

A-1

Bpop

Carr

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove() which needs a value, not an index.

Printing the removed element instead of the updated list.

Using pop(-1) removes the last element by index and returns it. Printing arr shows the updated list.