Merge pull request #1801 from CodingTestStudy2/황은지

[황은지] Day12

Author: github-actions[bot]

leetcode3/황은지/476. Number Complement.js

@@ -0,0 +1,14 @@
+/**
+ * @param {number} num
+ * @return {number}
+ */
+var findComplement = function (num) {
+  const binary = num.toString(2);
+  return parseInt(
+    binary
+      .split("")
+      .map((digit) => (digit === "1" ? "0" : "1"))
+      .join(""),
+    2,
+  );
+};