For loop with step and downTo in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 5.

Kotlin

for (i in 1..[1]) {
    println(i)
}

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

A4

B6

C5

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using 6 instead of 5 includes an extra number.

Using 4 stops before 5.

The range 1..5 includes numbers from 1 to 5.

2fill in blank

medium

Complete the code to print even numbers from 2 to 10 using step.

Kotlin

for (i in 2..10 step [1]) {
    println(i)
}

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

A3

B2

C1

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using step 1 prints all numbers.

Using step 3 skips some even numbers.

The step keyword controls the increment. For even numbers, step should be 2.

3fill in blank

hard

Fix the error in the code to print numbers from 5 down to 1.

Kotlin

for (i in 5 [1] 1) {
    println(i)
}

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

Astep

Buntil

C..

DdownTo

Attempts:

3 left

💡 Hint

Common Mistakes

Using '..' creates an increasing range, causing no output.

Using 'until' is for increasing ranges and excludes the end.

The downTo keyword creates a decreasing range from 5 to 1.

4fill in blank

hard

Fill both blanks to print odd numbers from 9 down to 1.

Kotlin

for (i in 9 [1] 1 [2] 2) {
    println(i)
}

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

AdownTo

Bstep

C..

Duntil

Attempts:

3 left

💡 Hint

Common Mistakes

Using '..' instead of 'downTo' counts up, not down.

Forgetting step prints all numbers.

Use downTo for counting down and step 2 to skip even numbers.

5fill in blank

hard

Fill all three blanks to print numbers from 10 down to 2, stepping by 2.

Kotlin

for (i in [1] [2] [3]) {
    println(i)
}

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

A10

Bstep 2

CdownTo 2

Duntil 2

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'until 2' counts up and excludes 2.

Placing step before downTo causes syntax errors.

Start at 10, count down to 2 using downTo 2, and step by 2 with step 2.