Initial data commit

Task/Greatest-common-divisor/PowerShell/greatest-common-divisor-1.psh

@@ -0,0 +1,18 @@
+function Get-GCD ($x, $y)
+{
+  if ($x -eq $y) { return $y }
+  if ($x -gt $y) {
+    $a = $x
+    $b = $y
+  }
+  else {
+    $a = $y
+    $b = $x
+  }
+  while ($a % $b -ne 0) {
+    $tmp = $a % $b
+    $a = $b
+    $b = $tmp
+  }
+  return $b
+}

Task/Greatest-common-divisor/PowerShell/greatest-common-divisor-2.psh

@@ -0,0 +1,3 @@
+function Get-GCD ($x, $y) {
+  if ($y -eq 0) { $x } else { Get-GCD $y ($x%$y) }
+}

Task/Greatest-common-divisor/PowerShell/greatest-common-divisor-3.psh

@@ -0,0 +1,6 @@
+Function Get-GCD( $x, $y ) {
+    while ($y -ne 0) {
+        $x, $y = $y, ($x % $y)
+    }
+    [Math]::abs($x)
+}