Create Sunny.md

sunny-ljc · web-flow · commit 1b156d91acba · 2018-12-06T11:11:42.000-05:00
diff --git a/2018.12.07-leetcode104/Sunny.md b/2018.12.07-leetcode104/Sunny.md
@@ -0,0 +1,15 @@
+```java
+class Solution {
+    public int maxDepth(TreeNode root) {
+        if (root == null) return 0;
+        return Math.max(maxDepth(root.left, 1), maxDepth(root.right, 1));
+    }
+    
+    public int maxDepth(TreeNode node, int level) {
+        if (node != null) {
+            level = Math.max(maxDepth(node.left, level+1), maxDepth(node.right, level+1));
+        }
+        return level;
+    }
+}
+```
