104. Maximum Depth of Binary Tree (java)

Author: bluesword12350

solution/0104.Maximum Depth of Binary Tree/Solution.java

@@ -0,0 +1,6 @@
+class Solution {
+    public int maxDepth(TreeNode root) {
+        if (root == null) return 0;
+        return Integer.max(maxDepth(root.left), maxDepth(root.right)) + 1;
+    }
+}