String methods (.Split, .Replace, .Trim) in PowerShell - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of this PowerShell code using .Split()?

Consider the following PowerShell command:

$text = 'apple,banana, cherry, date'
$result = $text.Split(',')
$result | ForEach-Object { $_.Trim() }

What will be the output?

PowerShell

$text = 'apple,banana, cherry, date'
$result = $text.Split(',')
$result | ForEach-Object { $_.Trim() }

A

apple
banana
cherry
date

B apple,banana, cherry, date

C

apple
banana, cherry
 date

D apple banana cherry date

💡 Hint

Remember that .Split(',') breaks the string at commas, and .Trim() removes spaces around each piece.

The .Split(',') method splits the string into parts at each comma. Each part may have spaces, so .Trim() removes those spaces. The output is each fruit name on its own line without extra spaces.

💻 Command Output

intermediate

What does this PowerShell code output after .Replace()?

Look at this code:

$sentence = 'I love cats and cats love me.'
$newSentence = $sentence.Replace('cats', 'dogs')
$newSentence

What is the output?

PowerShell

$sentence = 'I love cats and cats love me.'
$newSentence = $sentence.Replace('cats', 'dogs')
$newSentence

A I love cats and dogs love me.

B I love cats and cats love me.

C I love dogs and cats love me.

D I love dogs and dogs love me.

💡 Hint

The .Replace() method changes all occurrences of the first string to the second string.

The .Replace('cats', 'dogs') replaces every 'cats' with 'dogs' in the string, so both 'cats' words become 'dogs'.

📝 Syntax

advanced

Which option correctly trims spaces from both ends of a string in PowerShell?

You want to remove spaces at the start and end of a string stored in $inputString. Which code does this correctly?

A $trimmed = $inputString.Trim()

B $trimmed = $inputString.Trim(' ')

C $trimmed = $inputString.TrimStart()

D $trimmed = $inputString.TrimEnd()

💡 Hint

Think about which method removes spaces from both sides, not just one side.

The .Trim() method removes whitespace from both the start and end of the string. .TrimStart() and .TrimEnd() remove spaces only from one side.

💻 Command Output

advanced

What is the output of this PowerShell code using .Split() with multiple characters?

Given this code:

$data = 'one;two,three four'
$parts = $data.Split(';', ',', ' ')

What will be the output?

PowerShell

$data = 'one;two,three four'
$parts = $data.Split(';', ',', ' ')
$parts

A @('one', 'two,three four')

B @('one', 'two', 'three', 'four')

C @('one;two,three four')

D @('one;two', 'three four')

💡 Hint

The .Split() method can take multiple separator characters to split on any of them.

The .Split(';', ',', ' ') splits the string at any semicolon, comma, or space, resulting in four separate strings.

💻 Command Output

expert

What is the value of $result after chaining .Replace() and .Trim()?

Analyze this code:

$text = '  Hello World!  '
$result = $text.Replace('World', 'PowerShell').Trim()
$result

What is the value of $result?

PowerShell

$text = '  Hello World!  '
$result = $text.Replace('World', 'PowerShell').Trim()
$result

A Hello World!

B !llehSrewoP olleH

C Hello PowerShell!

D !dlroW olleH

💡 Hint

The .Replace() changes text inside, and .Trim() removes spaces outside.

First, 'World' is replaced with 'PowerShell', so the string becomes ' Hello PowerShell! '. Then .Trim() removes spaces at start and end, leaving 'Hello PowerShell!'.