SPOP for random removal in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to remove a random element from the set named 'myset'.

Redis

SPOP [1]

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

Arandomset

Bset1

Cmyset

Ddata

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong set name that does not exist.

Forgetting to specify the set name.

The SPOP command removes and returns a random element from the specified set. Here, the set name is myset.

2fill in blank

medium

Complete the code to remove 3 random elements from the set 'colors'.

Redis

SPOP colors [1]

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

A2

B3

C4

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong count number.

Omitting the count argument when multiple removals are needed.

The SPOP command can take a count argument to remove multiple random elements. Here, 3 elements are removed.

3fill in blank

hard

Fix the error in the command to remove a random element from the set 'users'.

Redis

SPOP [1] users

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

Ausers

B3

Cset

Drandom

Attempts:

3 left

💡 Hint

Common Mistakes

Placing the set name after an extra word.

Adding unnecessary arguments before the set name.

The SPOP command syntax is SPOP key [count]. The set name must come immediately after SPOP. Here, 'users' is the set name and should be the first argument.

4fill in blank

hard

Fill both blanks to remove 2 random elements from the set named 'fruits'.

Redis

SPOP [1] [2]

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

Afruits

B2

C3

Dvegetables

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the set name and count.

Using the wrong count number.

The command SPOP fruits 2 removes 2 random elements from the set 'fruits'.

5fill in blank

hard

Fill both blanks to remove 1 random element from the set 'animals' and store it in variable 'removed'.

Redis

removed = [1] [2] 

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

ASPOP

Banimals

DSET

Attempts:

3 left

💡 Hint

Common Mistakes

Adding an unnecessary count argument for one element.

Using incorrect command names or keywords.

The command SPOP animals removes one random element from the set 'animals'. The empty string in the third blank means no count argument is needed for one element.