Create 104-Maximum-Depth-of-Binary-Tree.js

javascript/104-Maximum-Depth-of-Binary-Tree.js

@@ -0,0 +1,23 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ * this.val = (val===undefined ? 0 : val)
+ * this.left = (left===undefined ? null : left)
+ * this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {number}
+ */
+var maxDepth = (root) => {
+ let maxDepth = 0;
+ let DFS = (node, depth) => {
+ if (!node) return maxDepth;
+ if (depth > maxDepth) maxDepth = depth;
+ DFS(node.right, depth + 1);
+ DFS(node.left, depth + 1);
+ }
+ DFS(root, 1);
+ return maxDepth;
+};