LeetCode101. Symmetric Tree
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题目链接
判断一个二叉树是否对称。
class Solution {public: bool isSymmetric(TreeNode* root) { return judge(root, root); } bool judge(TreeNode* root1, TreeNode* root2){ if(!root1 && !root2) return 1; if(root1 && root2 && root1->val==root2->val) if(judge(root1->left, root2->right) && judge(root1->right, root2->left)) return 1; return 0; }};
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