Added reverse bits solution

Author: nhistory

reverse-bits/nhistory.js

@@ -0,0 +1,16 @@
+var reverseBits = function (n) {
+  // Make variable to store input
+  // toString method doesn't include 0 front of number
+  let binary = n.toString(2);
+
+  // Added number of 0s to satisfy 32 bits
+  while (binary.length < 32) {
+    binary = "0" + binary;
+  }
+
+  // Reversed binary string and convert into integer
+  return parseInt(binary.split("").reverse().join(""), 2);
+};
+
+// TC: O(1)
+// SC: O(1)