From 393ddb83df59c398f327858b85a16c031839db16 Mon Sep 17 00:00:00 2001
From: Sainnhe Park <i@sainnhe.dev>
Date: Mon, 30 Jan 2023 20:55:48 +0800
Subject: [PATCH] s0104

---
 include/s0104_maximum_depth_of_binary_tree.hpp | 15 +++++++++++++++
 src/s0104_maximum_depth_of_binary_tree.cpp     |  6 ++++++
 2 files changed, 21 insertions(+)
 create mode 100644 include/s0104_maximum_depth_of_binary_tree.hpp
 create mode 100644 src/s0104_maximum_depth_of_binary_tree.cpp

diff --git a/include/s0104_maximum_depth_of_binary_tree.hpp b/include/s0104_maximum_depth_of_binary_tree.hpp
new file mode 100644
index 0000000..e360194
--- /dev/null
+++ b/include/s0104_maximum_depth_of_binary_tree.hpp
@@ -0,0 +1,15 @@
+#ifndef S0104_MAXIMUM_DEPTH_OF_BINARY_TREE_HPP
+#define S0104_MAXIMUM_DEPTH_OF_BINARY_TREE_HPP
+
+#include <algorithm>
+
+#include "structures.hpp"
+
+using namespace std;
+
+class S0104 {
+ public:
+  int maxDepth(TreeNode* root);
+};
+
+#endif
diff --git a/src/s0104_maximum_depth_of_binary_tree.cpp b/src/s0104_maximum_depth_of_binary_tree.cpp
new file mode 100644
index 0000000..387b175
--- /dev/null
+++ b/src/s0104_maximum_depth_of_binary_tree.cpp
@@ -0,0 +1,6 @@
+#include "s0104_maximum_depth_of_binary_tree.hpp"
+
+int S0104::maxDepth(TreeNode* root) {
+  if (root == nullptr) return 0;
+  return max(maxDepth(root->left), maxDepth(root->right)) + 1;
+}