Powershell 3 Cmdlets Hackerrank Solution Link

Import-Csv .\employees.csv | Where-Object $_.YearsOfExperience -ge 2 | Sort-Object Salary -Descending | Select-Object -First 3 | Group-Object Department | Select-Object @N="Department";E=$_.Name, @N="AverageSalary";E= Measure-Object Salary -Average).Average, 2) | Sort-Object Department | Format-Table -AutoSize

Department AverageSalary ---------- ------------- Finance 100000 IT 85000 The challenge will silently test you on: Case 1: Fewer than 3 eligible employees If only 2 employees have >=2 years experience, your Select-Object -First 3 will return just 2, and Group-Object still works fine. Case 2: One department with multiple top earners If all top 3 are from IT, grouping will show only one row for IT with average salary of those 3. Case 3: Empty dataset If no employee has >=2 years experience, Where-Object outputs $null , and the rest of the pipeline should fail gracefully. HackerRank expects:

Good luck, and may the pipeline be with you! powershell 3 cmdlets hackerrank solution

Many candidates struggle not because they don't know PowerShell, but because they try to solve the challenge using traditional text parsing ( awk , sed , or regex -heavy approaches) rather than embracing .

$data = Import-Csv .\employees.csv Filters objects based on a condition. Import-Csv

# PowerShell 3+ Template $inputFile = ".\data.csv" $requiredYears = 2 $topN = 3 Import-Csv $inputFile | Where-Object [int]$ .YearsOfExperience -ge $requiredYears | Sort-Object [int]$ .Salary -Descending | Select-Object -First $topN | Group-Object Department | Select-Object @Name="Department"; Expression=$ .Name, @Name="AverageSalary"; Expression= Measure-Object Salary -Average).Average, 0) | Sort-Object Department

$grouped = $top3 | Group-Object Department Calculates sum, average, min, max. HackerRank expects: Good luck, and may the pipeline

If you have landed on the "PowerShell 3 Cmdlets" challenge on HackerRank, you are likely staring at a problem that demands more than just scripting intuition. It requires a specific understanding of how PowerShell v3 (and later) handles pipelines, object manipulation, and filtering.