Create (LEETCODSymmetric_tree.cpp

Author: sudarshandpai

Tree/(LEETCODSymmetric_tree.cpp

@@ -0,0 +1,15 @@
+class Solution {
+public:
+    bool isSymmetric(TreeNode* root) {
+        return root==NULL || isSymmetricHelp(root->left, root->right);
+}
+
+
+    bool isSymmetricHelp(TreeNode* left, TreeNode* right){
+    if(left==NULL || right==NULL)
+        return left==right;
+    if(left->val!=right->val)
+        return false;
+    return isSymmetricHelp(left->left, right->right) && isSymmetricHelp(left->right, right->left);
+    }
+};