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模块三——二分:704.二分查找

青乌 2024-04-26 阅读 11

解题思路:

class Solution {
    public TreeNode invertTree(TreeNode root) {
        if (root == null) return null;

        TreeNode left = invertTree(root.left);
        TreeNode right = invertTree(root.right);
        root.left = right;
        root.right = left;
        return root;
    }
}
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