101 Symmetric Tree

阿新 • • 發佈：2018-11-25

題意：

判斷一顆二叉樹是否對稱

程式碼：

bool comp(TreeNode* l, TreeNode* r) {
	if (l == NULL&&r == NULL)
		return true;
	if (l == NULL||r == NULL)
		return false;
	if (l->val != r->val)
		return false;
	return comp(l->left, r->right) && comp(l->right, r->left);

}

bool isSymmetric 
(TreeNode* root) {
	if (!root)
		return true;
	return comp(root->left, root->right);
}

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題意：判斷一顆二叉樹是否對稱程式碼： bool comp(TreeNode* l, TreeNode* r) { if (l == NULL&&r == NULL) return true; if (l == NULL||r == NULL) re

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101 Symmetric Tree

題意：

程式碼：

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