Create main.cpp

Author: JawadSher

17 - Binary Tree Data Structure Problems/12 - Path Sum/main.cpp

@@ -0,0 +1,25 @@
+/**
+ * Definition for a binary tree node.
+ * struct TreeNode {
+ *     int val;
+ *     TreeNode *left;
+ *     TreeNode *right;
+ *     TreeNode() : val(0), left(nullptr), right(nullptr) {}
+ *     TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
+ *     TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}
+ * };
+ */
+class Solution {
+public:
+    bool hasPathSum(TreeNode* root, int targetSum) {
+        if(root == NULL) return false;
+
+        targetSum -= root -> val;
+
+        if(root -> left == NULL && root -> right == NULL){
+            return targetSum == 0;
+        }
+
+        return hasPathSum(root -> left, targetSum) || hasPathSum(root -> right, targetSum);
+    }
+};