export declare function fail(msg: string): void;
export declare function randomChoice<T>(arr: T[]): T;
export declare function shuffle2<T>(arr: [T, T]): [T, T];
export declare function last<T>(arr: T[]): T;
export declare function zufallszahl(von: number, bis: number): number;
export declare function toDigits(n: number): number[];
export declare function fromDigits(n: number[]): number;
export declare function sampleSearch<T>(create: () => T, check: (val: T) => boolean, def: T, limit?: number): T;
export declare function gcd(a: number, b: number): number;