二叉查找树deleteMin错误

[byedo]

public Node deleteMin(Node x) {
    if (x.left == null)
        return x.right;
    x.left = deleteMin(x.left);
    recalculateSize(x);
    return x;
}

应改成

public Node deleteMin(Node x) {
    if (x.left == null){
        return x.right;}
    x.left = deleteMin(x.left);
    recalculateSize(x);
    return x;
}