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思路很简单,出口是空节点,先翻转子节点,再返回。
TreeNode* invertTree(TreeNode* root) {
if (root == nullptr){
return root;
}
invertTree(root->left);
invertTree(root->right);
swap(root->left, root->right);
return root;
}
def invert_tree(root)
return root if root == nil
invert_tree(root.left)
invert_tree(root.right)
root.left, root.right = root.right, root.left
root
end
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原文地址:http://www.cnblogs.com/wuOverflow/p/4700289.html