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Object.create(b) : (__.prototype = b.prototype, new __());\n    };\n})();\nvar TreeNode = /** @class */ (function () {\n    function TreeNode(key, value) {\n        this._color = 1 /* TreeNodeColor.RED */;\n        this._key = undefined;\n        this._value = undefined;\n        this._left = undefined;\n        this._right = undefined;\n        this._parent = undefined;\n        this._key = key;\n        this._value = value;\n    }\n    /**\n     * @description Get the pre node.\n     * @returns TreeNode about the pre node.\n     */\n    TreeNode.prototype._pre = function () {\n        var preNode = this;\n        if (preNode._color === 1 /* TreeNodeColor.RED */ &&\n            preNode._parent._parent === preNode) {\n            preNode = preNode._right;\n        }\n        else if (preNode._left) {\n            preNode = preNode._left;\n            while (preNode._right) {\n                preNode = preNode._right;\n            }\n        }\n        else {\n            var pre = preNode._parent;\n            while (pre._left === preNode) {\n                preNode = pre;\n                pre = preNode._parent;\n            }\n            preNode = pre;\n        }\n        return preNode;\n    };\n    /**\n     * @description Get the next node.\n     * @returns TreeNode about the next node.\n     */\n    TreeNode.prototype._next = function () {\n        var nextNode = this;\n        if (nextNode._right) {\n            nextNode = nextNode._right;\n            while (nextNode._left) {\n                nextNode = nextNode._left;\n            }\n            return nextNode;\n        }\n        else {\n            var pre = nextNode._parent;\n            while (pre._right === nextNode) {\n                nextNode = pre;\n                pre = nextNode._parent;\n            }\n            if (nextNode._right !== pre) {\n                return pre;\n            }\n            else\n                return nextNode;\n        }\n    };\n    /**\n     * @description Rotate left.\n     * @returns TreeNode about moved to original position after rotation.\n     */\n    TreeNode.prototype._rotateLeft = function () {\n        var PP = this._parent;\n        var V = this._right;\n        var R = V._left;\n        if (PP._parent === this)\n            PP._parent = V;\n        else if (PP._left === this)\n            PP._left = V;\n        else\n            PP._right = V;\n        V._parent = PP;\n        V._left = this;\n        this._parent = V;\n        this._right = R;\n        if (R)\n            R._parent = this;\n        return V;\n    };\n    /**\n     * @description Rotate right.\n     * @returns TreeNode about moved to original position after rotation.\n     */\n    TreeNode.prototype._rotateRight = function () {\n        var PP = this._parent;\n        var F = this._left;\n        var K = F._right;\n        if (PP._parent === this)\n            PP._parent = F;\n        else if (PP._left === this)\n            PP._left = F;\n        else\n            PP._right = F;\n        F._parent = PP;\n        F._right = this;\n        this._parent = F;\n        this._left = K;\n        if (K)\n            K._parent = this;\n        return F;\n    };\n    return TreeNode;\n}());\nexport { TreeNode };\nvar TreeNodeEnableIndex = /** @class */ (function (_super) {\n    __extends(TreeNodeEnableIndex, _super);\n    function TreeNodeEnableIndex() {\n        var _this = _super !== null && _super.apply(this, arguments) || this;\n        _this._subTreeSize = 1;\n        return _this;\n    }\n    /**\n     * @description Rotate left and do recount.\n     * @returns TreeNode about moved to original position after rotation.\n     */\n    TreeNodeEnableIndex.prototype._rotateLeft = function () {\n        var parent = _super.prototype._rotateLeft.call(this);\n        this._recount();\n        parent._recount();\n        return parent;\n    };\n    /**\n     * @description Rotate right and do recount.\n     * @returns TreeNode about moved to original position after rotation.\n     */\n    TreeNodeEnableIndex.prototype._rotateRight = function () {\n        var parent = _super.prototype._rotateRight.call(this);\n        this._recount();\n        parent._recount();\n        return parent;\n    };\n    TreeNodeEnableIndex.prototype._recount = function () {\n        this._subTreeSize = 1;\n        if (this._left) {\n            this._subTreeSize += this._left._subTreeSize;\n        }\n        if (this._right) {\n            this._subTreeSize += this._right._subTreeSize;\n        }\n    };\n    return TreeNodeEnableIndex;\n}(TreeNode));\nexport { TreeNodeEnableIndex };\n","export const enum TreeNodeColor {\n  RED = 1,\n  BLACK = 0\n}\n\nexport class TreeNode<K, V> {\n  _color = TreeNodeColor.RED;\n  _key: K | undefined = undefined;\n  _value: V | undefined = undefined;\n  _left: TreeNode<K, V> | undefined = undefined;\n  _right: TreeNode<K, V> | undefined = undefined;\n  _parent: TreeNode<K, V> | undefined = undefined;\n  constructor(key?: K, value?: V) {\n    this._key = key;\n    this._value = value;\n  }\n  /**\n   * @description Get the pre node.\n   * @returns TreeNode about the pre node.\n   */\n  _pre() {\n    let preNode: TreeNode<K, V> = this;\n    if (\n      preNode._color === TreeNodeColor.RED &&\n      preNode._parent!._parent === preNode\n    ) {\n      preNode = preNode._right!;\n    } else if (preNode._left) {\n      preNode = preNode._left;\n      while (preNode._right) {\n        preNode = preNode._right;\n      }\n    } else {\n      let pre = preNode._parent!;\n      while (pre._left === preNode) {\n        preNode = pre;\n        pre = preNode._parent!;\n      }\n      preNode = pre;\n    }\n    return preNode;\n  }\n  /**\n   * @description Get the next node.\n   * @returns TreeNode about the next node.\n   */\n  _next() {\n    let nextNode: TreeNode<K, V> = this;\n    if (nextNode._right) {\n      nextNode = nextNode._right;\n      while (nextNode._left) {\n        nextNode = nextNode._left;\n      }\n      return nextNode;\n    } else {\n      let pre = nextNode._parent!;\n      while (pre._right === nextNode) {\n        nextNode = pre;\n        pre = nextNode._parent!;\n      }\n      if (nextNode._right !== pre) {\n        return pre;\n      } else return nextNode;\n    }\n  }\n  /**\n   * @description Rotate left.\n   * @returns TreeNode about moved to original position after rotation.\n   */\n  _rotateLeft() {\n    const PP = this._parent!;\n    const V = this._right!;\n    const R = V._left;\n\n    if (PP._parent === this) PP._parent = V;\n    else if (PP._left === this) PP._left = V;\n    else PP._right = V;\n\n    V._parent = PP;\n    V._left = this;\n\n    this._parent = V;\n    this._right = R;\n\n    if (R) R._parent = this;\n\n    return V;\n  }\n  /**\n   * @description Rotate right.\n   * @returns TreeNode about moved to original position after rotation.\n   */\n  _rotateRight() {\n    const PP = this._parent!;\n    const F = this._left!;\n    const K = F._right;\n\n    if (PP._parent === this) PP._parent = F;\n    else if (PP._left === this) PP._left = F;\n    else PP._right = F;\n\n    F._parent = PP;\n    F._right = this;\n\n    this._parent = F;\n    this._left = K;\n\n    if (K) K._parent = this;\n\n    return F;\n  }\n}\n\nexport class TreeNodeEnableIndex<K, V> extends TreeNode<K, V> {\n  _subTreeSize = 1;\n  /**\n   * @description Rotate left and do recount.\n   * @returns TreeNode about moved to original position after rotation.\n   */\n  _rotateLeft() {\n    const parent = super._rotateLeft() as TreeNodeEnableIndex<K, V>;\n    this._recount();\n    parent._recount();\n    return parent;\n  }\n  /**\n   * @description Rotate right and do recount.\n   * @returns TreeNode about moved to original position after rotation.\n   */\n  _rotateRight() {\n    const parent = super._rotateRight() as TreeNodeEnableIndex<K, V>;\n    this._recount();\n    parent._recount();\n    return parent;\n  }\n  _recount() {\n    this._subTreeSize = 1;\n    if (this._left) {\n      this._subTreeSize += (this._left as TreeNodeEnableIndex<K, V>)._subTreeSize;\n    }\n    if (this._right) {\n      this._subTreeSize += (this._right as TreeNodeEnableIndex<K, V>)._subTreeSize;\n    }\n  }\n}\n"]}