Data update

Task/Gray-code/PowerShell/gray-code.ps1

@@ -0,0 +1,35 @@
+# Gray code
+
+function Encode {
+  [OutputType([uint32])]
+  param([uint32]$V)
+
+  return $V -bxor ($V -shr 1)
+}
+
+function Decode {
+  [OutputType([uint32])]
+  param([uint32]$V)
+
+  [uint32]$result = 0
+  while ($V -gt 0) {
+    $result = $result -bxor $V
+    $V = $V -shr 1
+  }
+  return $result
+}
+
+Write-Output "decimal  binary   gray    decoded"
+foreach ($i in 0..31) {
+  [uint32]$g = Encode($i)
+  [uint32]$d = Decode($g)
+  [string]$out = @()
+  $out += "{0, 4}     " -f $i
+  $binS = ([convert]::ToString($i, 2)).PadLeft(5, "0")
+  $out += "$binS   "
+  $binS = ([convert]::ToString($g, 2)).PadLeft(5, "0")
+  $out += "$binS   "
+  $binS = ([convert]::ToString($d, 2)).PadLeft(5, "0")
+  $out += "$binS{0, 4}" -f $d
+  Write-Output $out
+}