根据前序序列和中序序列，重建一颗树（PHP递归实现）
复制 class TreeNode{ public $data; public $lchild = null; public $rchild = null; public function __construct($data='',$...
复制 class TreeNode{ public $data; public $lchild = null; public $rchild = null; public function __construct($data='',$...