Kishy-nivas · June 20, 2018 14:48
diff --git a/greater_tree.cpp b/greater_tree.cpp
 class Solution {
 public:
    int sum =0; 
    TreeNode* convertBST(TreeNode* root) {
        if(root == nullptr)
            return nullptr; 
        convertBST(root->right);
        sum += root->val; 
        root->val = sum ;
        convertBST(root->left); 
        return root; 
    }
 };
	class Solution {
	public:
	int sum =0;
	TreeNode* convertBST(TreeNode* root) {
	if(root == nullptr)
	return nullptr;
	convertBST(root->right);
	sum += root->val;
	root->val = sum ;
	convertBST(root->left);
	return root;
	}
	};