export declare type IBaseType = undefined | null | number | boolean | string;
export interface ILinkList<T> {
    val: T;
    next: ILinkList<T> | null;
}
export interface IBinaryTree<T> {
    val: T;
    left: IBinaryTree<T> | null;
    right: IBinaryTree<T> | null;
}
export interface ITree<T> {
    val: T;
    childs: ITree<T>[];
}
export declare type ICompareFn<T> = (a: T, b: T) => number;