| 1 | <?php |
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| 20 | class BSTNode implements BinaryNodeInterface { |
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| 21 | public $key; // key used to insert, remove and retrieve |
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| 22 | public $data; // associated data |
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| 23 | public $parent; // the parent node |
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| 24 | public $left; // left subtree |
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| 25 | public $right; // right subtree |
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| 26 | |||
| 27 | public function __construct($key, $data, $parent = null, $left = null, $right = null) { |
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| 34 | } |