All but Blogging

1 files changed, 23 insertions, 0 deletions

diff --git a/challenge-119/dave-jacoby/node/ch-1.js b/challenge-119/dave-jacoby/node/ch-1.js
new file mode 100644
index 0000000000..6d1075d34d
--- /dev/null
+++ b/challenge-119/dave-jacoby/node/ch-1.js
@@ -0,0 +1,23 @@
+"use strict";
+
+for (let i in Array(21).fill("")) {
+  let v = flopped(i);
+  console.log(["", i, v].join("\t"));
+}
+
+console.log(["", 86, flopped(86)].join("\t"));
+console.log(["", 101, flopped(101)].join("\t"));
+console.log(["", 18, flopped(18)].join("\t"));
+console.log(["", 33, flopped(33)].join("\t"));
+
+function flopped(n) {
+  let b = parseInt(n).toString(2);
+  while (b.length < 8) {
+    b = "0" + b;
+  }
+  let front = b.substring(0, 4);
+  let back = b.substring(4);
+  let r = back + front;
+  let x = parseInt(r, 2);
+  return x;
+}