題解_1

/*** Definition for a binary tree node.* struct TreeNode {* int val;* struct TreeNode *left;* struct TreeNode *right;* };*/bool isSameTree(struct TreeNode* p, struct TreeNode* q){if(p == NULL && q == NULL){return true;}else if(p == NULL && q != NULL){return false;}else if (p != NULL && q == NULL){return false;}else {if(p->val != q->val){return false;}else {return isSameTree(p->left, q->left) && isSameTree(p->right, q->right);}} }

題解_2

/*** Definition for a binary tree node.* struct TreeNode {* int val;* struct TreeNode *left;* struct TreeNode *right;* };*/bool isSameTree(struct TreeNode* p, struct TreeNode* q){if(!p && !q){return true;}else if((p && !q) || (!p && q)){return false;}else{if(p->val != q->val){return false;}else{return isSameTree(p->left,q->left) && isSameTree(p->right,q->right);}} }

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