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null fixes

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This commit is contained in:
Dennis Eichhorn 2023-10-15 19:32:04 +00:00
parent bd29e83c06
commit 2b6e7b008d
1 changed files with 7 additions and 8 deletions
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15
Stdlib/Tree/BinarySearchTree.php
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@ -249,15 +249,15 @@ class BinarySearchTree
if ($node->parent->left !== null
&& $node->parent->left->root?->compare($node->data) === 0
) {
$node->parent->left = $temp->tree;
$node->parent->left = $temp?->tree;
} elseif ($node->parent->right !== null
&& $node->parent->right->root?->compare($node->data) === 0
) {
$node->parent->right = $temp->tree;
$node->parent->right = $temp?->tree;
}
}
$temp->parent = $node->parent;
$temp->parent = $node?->parent;
$node = null;
@ -270,21 +270,20 @@ class BinarySearchTree
if ($node->parent->left !== null
&& $node->parent->left->root?->compare($node->data) === 0
) {
$node->parent->left = $temp->tree;
$node->parent->left = $temp?->tree;
} elseif ($node->parent->right !== null
&& $node->parent->right->root?->compare($node->data) === 0
) {
$node->parent->right = $temp->tree;
$node->parent->right = $temp?->tree;
}
}
$temp->parent = $node->parent;
$temp->parent = $node?->parent;
$node = null;
return;
} else {
$temp = $this->successor($node);
} elseif (($temp = $this->successor($node)) !== null) {
$node->key = $temp->key;
$node->data = $temp->data;