Merge pull request doocs#308 from Stackingrule/dev

feat:add Solution.cpp for 0100.Same Tree

Author: yanglbme

solution/0100-0199/0100.Same Tree/Solution.cpp

@@ -0,0 +1,8 @@
+class Solution {
+public:
+    bool isSameTree(TreeNode* p, TreeNode* q) {
+        if (!p && !q) return true;
+        if ((p && !q) || (!p && q) || (p->val != q->val)) return false;
+        return isSameTree(p->left, q->left) && isSameTree(p->right, q->right);
+    }
+};