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9 months ago
class RedBlackNode<K, V> {
key: K;
value: V;
color: 'red' | 'black';
left: RedBlackNode<K, V> | null;
right: RedBlackNode<K, V> | null;
constructor(key: K, value: V, color: 'red' | 'black' = 'red') {
this.key = key;
this.value = value;
this.color = color;
this.left = null;
this.right = null;
}
}
class RedBlackTree<K, V> {
root: RedBlackNode<K, V> | null;
constructor() {
this.root = null;
}
// Поиск элемента по ключу
search(key: K): RedBlackNode<K, V> | null {
return this._search(this.root, key);
}
private _search(node: RedBlackNode<K, V> | null, key: K): RedBlackNode<K, V> | null {
if (node === null || key === node.key) {
return node;
}
if (key < node.key) {
return this._search(node.left, key);
} else {
return this._search(node.right, key);
}
}
// Вставка элемента
insert(key: K, value: V): void {
this.root = this._insert(this.root, key, value);
if (this.root) this.root.color = 'black'; // Корень всегда черный
}
private _insert(node: RedBlackNode<K, V> | null, key: K, value: V): RedBlackNode<K, V> {
if (node === null) {
return new RedBlackNode(key, value);
}
if (key < node.key) {
node.left = this._insert(node.left, key, value);
} else if (key > node.key) {
node.right = this._insert(node.right, key, value);
} else {
node.value = value; // Если ключ уже существует, обновляем значение
}
return node;
}
// Удаление элемента
remove(key: K): void {
this.root = this._remove(this.root, key);
}
private _remove(node: RedBlackNode<K, V> | null, key: K): RedBlackNode<K, V> | null {
if (node === null) {
return null;
}
return node;
}
// Изменение элемента
update(key: K, value: V): void {
const node = this.search(key);
if (node) {
node.value = value;
}
}
}

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