Create maximum-binary-tree-ii.cpp

Author: kamyu104

C++/maximum-binary-tree-ii.cpp

@@ -0,0 +1,34 @@
+// Time:  O(h)
+// Space: O(1)
+
+/**
+ * Definition for a binary tree node.
+ * struct TreeNode {
+ *     int val;
+ *     TreeNode *left;
+ *     TreeNode *right;
+ *     TreeNode(int x) : val(x), left(NULL), right(NULL) {}
+ * };
+ */
+class Solution {
+public:
+    TreeNode* insertIntoMaxTree(TreeNode* root, int val) {
+        if (!root) {
+            return new TreeNode(val);
+        }
+
+        if (val > root->val) {
+            auto node = new TreeNode(val);
+            node->left = root;
+            return node;
+        }
+        
+        auto curr = root;
+        while (curr->right && curr->right->val > val) {
+            curr = curr->right;
+        }
+        auto node = new TreeNode(val);
+        tie(curr->right, node->left) = make_pair(node, curr->right);
+        return root;
+    }
+};