Take, drop, and chunked in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to take the first 3 elements from the list.

Kotlin

val numbers = listOf(1, 2, 3, 4, 5)
val firstThree = numbers.[1](3)
println(firstThree)

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

Atake

Bdrop

Cchunked

Dslice

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'drop' will skip elements instead of taking them.

Using 'chunked' splits the list into groups, not just taking elements.

The take function returns the first n elements from the list.

2fill in blank

medium

Complete the code to drop the first 2 elements from the list.

Kotlin

val letters = listOf("a", "b", "c", "d")
val afterDrop = letters.[1](2)
println(afterDrop)

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

Atake

Bchunked

Cdrop

Dslice

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'take' will select elements instead of skipping them.

Using 'chunked' groups elements but does not drop.

The drop function skips the first n elements and returns the rest.

3fill in blank

hard

Fix the error in the code to split the list into chunks of size 2.

Kotlin

val nums = listOf(10, 20, 30, 40, 50)
val chunks = nums.[1](2)
println(chunks)

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

Achunked

Bdrop

Ctake

Dslice

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'take' or 'drop' will not split the list into chunks.

Using 'slice' requires ranges, not chunk sizes.

The chunked function splits the list into sublists of the given size.

4fill in blank

hard

Fill both blanks to take the first 4 elements and then drop 2 from them.

Kotlin

val data = listOf(5, 6, 7, 8, 9)
val result = data.[1](4).[2](2)
println(result)

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

Atake

Bdrop

Cchunked

Dslice

Attempts:

3 left

💡 Hint

Common Mistakes

Reversing the order of 'take' and 'drop' changes the result.

Using 'chunked' instead of 'drop' or 'take' here is incorrect.

First, take(4) selects the first 4 elements, then drop(2) removes the first 2 from that selection.

5fill in blank

hard

Fill all three blanks to chunk the list into size 3, then take the first chunk, and drop its first element.

Kotlin

val items = listOf("x", "y", "z", "w", "v", "u")
val processed = items.[1](3).[2](1)[0].[3](1)
println(processed)

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

Achunked

Btake

Cdrop

Dslice

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'drop' instead of 'take' to select the first chunk will skip chunks and select a different one.

Trying to use 'slice' instead of 'chunked' to split the list.

First, chunked(3) splits the list into chunks of 3. Then take(1) selects the first chunk (as a singleton list), [0] extracts the chunk list itself, finally drop(1) removes the first element from that chunk.