From ffe501b30b9c89a6f684daac276e95807426e6e5 Mon Sep 17 00:00:00 2001
From: sik9252 <sik9252@naver.com>
Date: Thu, 12 Mar 2026 20:38:40 +0900
Subject: [PATCH 1/2] =?UTF-8?q?feat:=20AddBinary=20=ED=92=80=EC=9D=B4=20?=
 =?UTF-8?q?=EC=9E=91=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 sik9252/AddBinary.js | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 sik9252/AddBinary.js

diff --git a/sik9252/AddBinary.js b/sik9252/AddBinary.js
new file mode 100644
index 0000000..a2845e1
--- /dev/null
+++ b/sik9252/AddBinary.js
@@ -0,0 +1,8 @@
+/**
+ * @param {string} a
+ * @param {string} b
+ * @return {string}
+ */
+var addBinary = function (a, b) {
+  return (BigInt("0b" + a) + BigInt("0b" + b)).toString(2);
+};

From a19d1433a8ac0238fd0e8bf5a4edd49cafded5fe Mon Sep 17 00:00:00 2001
From: sik9252 <sik9252@naver.com>
Date: Thu, 12 Mar 2026 20:38:51 +0900
Subject: [PATCH 2/2] =?UTF-8?q?feat:=20DiameterOfBinaryTree=20=ED=92=80?=
 =?UTF-8?q?=EC=9D=B4=20=EC=9E=91=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 sik9252/DiameterOfBinaryTree.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 sik9252/DiameterOfBinaryTree.js

diff --git a/sik9252/DiameterOfBinaryTree.js b/sik9252/DiameterOfBinaryTree.js
new file mode 100644
index 0000000..dc9f6ec
--- /dev/null
+++ b/sik9252/DiameterOfBinaryTree.js
@@ -0,0 +1,21 @@
+/**
+ * @param {TreeNode} root
+ * @return {number}
+ */
+var diameterOfBinaryTree = function (root) {
+  let diameter = 0;
+
+  function dfs(node) {
+    if (!node) return 0;
+
+    const left = dfs(node.left);
+    const right = dfs(node.right);
+
+    diameter = Math.max(diameter, left + right);
+
+    return Math.max(left, right) + 1;
+  }
+
+  dfs(root);
+  return diameter;
+};