Why string manipulation is frequent in PowerShell - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to convert the string to uppercase.

PowerShell

$text = "hello"
$upper = $text.[1]()

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AToUpper

BToLower

CTrim

DReplace

Attempts:

3 left

💡 Hint

Common Mistakes

Using ToLower() instead of ToUpper()

Trying to use Replace() without specifying parameters

The ToUpper() method converts all characters in the string to uppercase.

2fill in blank

medium

Complete the code to get the length of the string.

PowerShell

$text = "PowerShell"
$length = $text.[1]

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ALength()

BSize

CCount

DLength

Attempts:

3 left

💡 Hint

Common Mistakes

Using Length() with parentheses causes an error

Using Count or Size which are not string properties

The Length property gives the number of characters in the string.

3fill in blank

hard

Fix the error in the code to replace spaces with dashes.

PowerShell

$text = "Hello World"
$newText = $text.[1](" ", "-")

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Areplace

BReplace

CSubstitute

DSwitch

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'replace' (non-standard casing)

Using 'Substitute' or 'Switch' which are not string methods

The Replace method replaces all occurrences of a substring with another substring.

4fill in blank

hard

Fill both blanks to extract the first 5 characters of the string.

PowerShell

$text = "Automation"
$firstFive = $text.[1](0, [2])

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ASubstring

B5

C4

DSplit

Attempts:

3 left

💡 Hint

Common Mistakes

Using Split instead of Substring

Using length 4 instead of 5

The Substring method extracts a part of the string starting at index 0 for length 5.

5fill in blank

hard

Fill all three blanks to create a dictionary of word lengths for words longer than 3 characters.

PowerShell

$words = @("code", "is", "fun", "and", "easy")
$lengths = @{}
foreach ($word in $words) {
  if ($word.[1] [2] 3) {
    $lengths[$word.[3]] = $word.[1]
  }
}

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

ALength

B>

CToUpper()

DCount

Attempts:

3 left

💡 Hint

Common Mistakes

Using Count instead of Length

Using '<' instead of '>'

Not converting word to uppercase

This code checks if the word length is greater than 3, converts the word to uppercase, and creates a dictionary with the uppercase word as key and its length as value.