Powershell: 3 Cmdlets Hackerrank Solution
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Powershell: 3 Cmdlets Hackerrank Solution

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

# 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= [math]::Round(($ .Group | Sort-Object Department powershell 3 cmdlets hackerrank solution

$avgSalary = $grouped.Group | Measure-Object Salary -Average Creates new columns on-the-fly. $data = Import-Csv

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: Case 2: One department with multiple top earners

| Select-Object Department, @Name="AverageSalary"; Expression=[int]($_.Group Let's assume the CSV file employees.csv looks like this:

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

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