Powershell 3 Cmdlets Hackerrank Solution

| Cmdlet | Purpose | |--------|---------| | Sort-Object | Sort ascending/descending | | Group-Object | Count occurrences | | Where-Object | Filter elements | | Select-Object | Pick first N, last N, or specific properties | | ForEach-Object | Apply transformation | | Measure-Object | Sum, average, min, max | | Join-String (v6+ not available) → use -join operator | Combine strings | | Split operator | Split strings | | -match , -replace | Regex operations |

$unique = $arr | Group-Object | ForEach-Object $_.Name powershell 3 cmdlets hackerrank solution

HackerRank expects the final output to match a specific string format. Often, you may need to join array elements into a single string using the operator or use Out-String Review & Best Practices Use Full Names, Not Aliases : In a "review" context or for shared scripts, avoid using Where-Object ForEach-Object . Use the full cmdlet names for readability PowerShell Style Guide Leverage PowerShell 3.0 Simplified Syntax : If the challenge allows, use the simpler Where-Object Property -eq "Value" instead of the older Where-Object $_.Property -eq "Value" Check Data Types | Cmdlet | Purpose | |--------|---------| | Sort-Object