Powershell 3 Cmdlets Hackerrank Solution May 2026

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= [math]::Round(($_.Group | 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: powershell 3 cmdlets hackerrank solution

# Add defensive check $data = Import-Csv .\employees.csv | Where-Object $_.YearsOfExperience -ge 2 if (-not $data) Write-Host "No eligible employees"; exit # then continue... But if they disallow if , use Select-Object with -Skip trickery or rely on Format-Table to output nothing. CSV imports all values as strings. Convert to int before sorting: Import-Csv