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Author: tg123

invert-binary-tree/Solution.java

@@ -0,0 +1,22 @@
+/**
+ * Definition for a binary tree node.
+ * public class TreeNode {
+ *     int val;
+ *     TreeNode left;
+ *     TreeNode right;
+ *     TreeNode(int x) { val = x; }
+ * }
+ */
+public class Solution {
+    public TreeNode invertTree(TreeNode root) {
+        if(root == null) return null;
+
+        TreeNode newLeft  = invertTree(root.right);
+        TreeNode newRight = invertTree(root.left);
+
+        root.left  = newLeft;
+        root.right = newRight;
+
+        return root;
+    }
+}