September Morn Update

Task/Identity-matrix/PowerShell/identity-matrix-1.psh

@@ -1,17 +1,6 @@
 function identity($n) {
-    if(0 -lt $n) {
-        $array = @(0) * $n
-        foreach ($i in 0..($n-1)) {
-            $array[$i] = @(0) * $n
-            $array[$i][$i] = 1
-        }
-        $array
-    } else { @() }
-}
-function show($a) {
-    if($a) {
-        0..($a.Count - 1) | foreach{ if($a[$_]){"$($a[$_])"}else{""} }
-    }
+    0..($n-1) | foreach{$row = @(0) * $n; $row[$_] = 1; ,$row}
 }
+function show($a) { $a | foreach{ "$_"} }
 $array = identity 4
 show $array