Powershell 3 Cmdlets Hackerrank Solution May 2026

Calculates sum, average, min, max.

$avgSalary = $grouped.Group | Measure-Object Salary -Average

Here's a PowerShell function that solves the problem:

function Execute-Cmdlet 
    param (
        [string]$cmdlet,
        [string]$argument
    )
switch ($cmdlet) 
        "Get-ChildItem" 
            if ($argument) 
                Get-ChildItem -Path $argument
             else 
                Get-ChildItem
"Get-Process" 
            if ($argument) 
                Get-Process -Name $argument
             else 
                Get-Process
"Get-Service" 
            if ($argument) 
                Get-Service -Name $argument
             else 
                Get-Service
default 
            Write-Host "Invalid cmdlet"

He tested on the sample:

[ERROR] Connection timeout
[INFO] User login
[ERROR] Disk timeout error
[WARNING] Low memory
[ERROR] timeout in module X

His command returned 3 (lines 1, 3, 5). The expected output was 3. It passed.

Let's assume the CSV file employees.csv looks like this: powershell 3 cmdlets hackerrank solution

Name,Department,Salary,YearsOfExperience
John Smith,IT,85000,5
Jane Doe,HR,72000,3
Bob Johnson,IT,92000,1
Alice Lee,Finance,105000,7
Charlie Brown,HR,68000,4
Diana Prince,Finance,95000,2
Eve Adams,IT,78000,6

$lines = @($input)
$arr = $lines[0].Trim() -split ' ' | ForEach-Object  [int]$_ 
$total = ($arr | Measure-Object -Sum).Sum
$minElem = ($arr | Measure-Object -Minimum).Minimum
$maxElem = ($arr | Measure-Object -Maximum).Maximum
Write-Output "$($total - $maxElem) $($total - $minElem)"

Cmdlets used: Measure-Object -Sum, Measure-Object -Minimum, Measure-Object -Maximum.

Filters objects based on a condition.

$data | Where-Object  $_.YearsOfExperience -ge 2 

$n, $arr = @($input)[0,1]  # dangerous if lines >2

Better robust reading:

$lines = @($input)
$n = [int]$lines[0]
$arr = $lines[1].Trim() -split '\s+' | ForEach-Object  [int]$_ 

PowerShell automatically writes output to the console (stdout) when a value is left on the pipeline. However, explicitly using the Write-Output cmdlet satisfies the "Cmdlets" requirement strictly, though simply returning the variable is often sufficient for HackerRank test cases. Calculates sum, average, min, max