Initial data commit

Task/Gray-code/TypeScript/gray-code.ts

@@ -0,0 +1,27 @@
+// Gray code
+
+function encode(v: number): number {
+  return v ^ (v >> 1);
+}
+
+function decode(v: number): number {
+  var result = 0;
+  while (v > 0) {
+    result ^= v;
+    v >>= 1;
+  }
+  return result;
+}
+
+console.log("decimal  binary   gray    decoded");
+for (var i = 0; i <= 31; i++) {
+  var g = encode(i);
+  var d = decode(g);
+  process.stdout.write(
+    "  " + i.toString().padStart(2, " ") +
+    "     " + i.toString(2).padStart(5, "0") +
+    "   " + g.toString(2).padStart(5, "0") +
+    "   " + d.toString(2).padStart(5, "0") +
+    "  " + d.toString().padStart(2, " "));
+  console.log();
+}