When with multiple conditions in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print "Weekend" when day is Saturday or Sunday.

Kotlin

val day = "Saturday"
when(day) {
    [1] -> println("Weekend")
    else -> println("Weekday")
}

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

A"Saturday", "Sunday"

B"Saturday", "Sunday", "Friday"

C"Saturday"

D"Sunday"

Attempts:

3 left

💡 Hint

Common Mistakes

Putting multiple values without commas

Using multiple when branches instead of one with multiple values

In Kotlin, you can list multiple values separated by commas in a when branch to match any of them.

2fill in blank

medium

Complete the code to print "Vowel" when letter is 'a', 'e', 'i', 'o', or 'u'.

Kotlin

val letter = 'e'
when(letter) {
    [1] -> println("Vowel")
    else -> println("Consonant")
}

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

A'x', 'y', 'z'

B'a', 'e', 'i'

C'a', 'b', 'c'

D'a', 'e', 'i', 'o', 'u'

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes instead of single quotes for characters

Listing only some vowels

Multiple characters can be matched in one when branch by listing them separated by commas.

3fill in blank

hard

Fix the error in the when expression to match multiple numbers for "Small number".

Kotlin

val num = 3
when(num) {
    [1] -> println("Small number")
    else -> println("Other number")
}

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

A(1, 2, 3)

B1, 2, 3

C[1, 2, 3]

D"1, 2, 3"

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or brackets around multiple values

Putting multiple values inside a string

In Kotlin when branches, multiple values are listed separated by commas without parentheses or brackets.

4fill in blank

hard

Fill both blanks to print "Weekend" for Saturday or Sunday and "Weekday" otherwise.

Kotlin

val day = "Sunday"
when(day) {
    [1] -> println("Weekend")
    [2] -> println("Weekday")
}

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

A"Saturday", "Sunday"

Belse

C"Monday", "Tuesday", "Wednesday", "Thursday", "Friday"

D"Holiday"

Attempts:

3 left

💡 Hint

Common Mistakes

Using else in the first branch

Listing all days explicitly instead of else

The first branch matches weekend days, the else branch covers all other days.

5fill in blank

hard

Fill all three blanks to print "Vowel", "Digit", or "Other" based on the input character.

Kotlin

val ch = '7'
when(ch) {
    [1] -> println("Vowel")
    [2] -> println("Digit")
    [3] -> println("Other")
}

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

A'a', 'e', 'i', 'o', 'u'

B'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'

Celse

D'b', 'c', 'd'

Attempts:

3 left

💡 Hint

Common Mistakes

Using else in the middle branch

Not listing all digits

Using quotes incorrectly

The when expression matches vowels, digits, and uses else for all other characters.