Arrays in PowerShell - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create an array with three numbers.

PowerShell

$numbers = @([1])

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

A1 2 3

B1, 2, 3

C1; 2; 3

D1. 2. 3

Attempts:

3 left

💡 Hint

Common Mistakes

Using semicolons instead of commas to separate values.

Using dots instead of commas.

In PowerShell, arrays are created using @() with comma-separated values inside.

2fill in blank

medium

Complete the code to access the second element of the array.

PowerShell

$secondElement = $numbers[[1]]

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

A1

B3

C2

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 2 or 3 as the index for the second element.

Forgetting that indexing starts at zero.

PowerShell arrays use zero-based indexing, so the second element is at index 1.

3fill in blank

hard

Fix the error in the code to add an element to the array.

PowerShell

$numbers [1] 4

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

A*=

B-=

C+

D+=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+' which does not modify the original array.

Using '-=' or '*=' which are incorrect here.

Use '+=' to add an element to an existing array in PowerShell.

4fill in blank

hard

Fill both blanks to create an array of numbers from 4 to 12.

PowerShell

$evens = @((2[1]10)[2]2)

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

A..

B,

C-

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using commas instead of the range operator.

Using '-' instead of '+'.

Use the range operator '..' to create numbers from 2 to 10, then add 2 to each element to get numbers from 4 to 12.

5fill in blank

hard

Fill all three blanks to create a filtered array of numbers greater than 3.

PowerShell

$filtered = $numbers | Where-Object { $_ [1] [2] } | Sort-Object -Descending | Select-Object -First [3]

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

A-gt

B3

C2

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators like '-lt'.

Selecting wrong number of elements.

Use '-gt' to filter numbers greater than 3, then select the first 5 after sorting descending.