Solution as on 20-04-2022 08:50 pm

Author: knockcat

0538. Convert BST to Greater Tree.cpp

@@ -0,0 +1,22 @@
+// 538.✅ Convert BST to Greater Tree
+
+class Solution
+{
+public:
+    void helper(TreeNode *root, int &total)
+    {
+        if (!root)
+            return;
+        helper(root->right, total);
+        total += root->val;
+        root->val = total;
+        helper(root->left, total);
+    }
+
+    TreeNode *convertBST(TreeNode *root)
+    {
+        int total = 0;
+        helper(root, total);
+        return root;
+    }
+};