/**
 * Shuffles an array
 * @returns a new array with the same elements in a random order
 */
export declare function shuffle<T>(array: T[]): T[];
/**
 *
 * @returns an array of integers in range [0..size-1] in random order
 */
export declare function randomizedOrder(size: number): number[];
/**
 * Swaps elements of an array in place
 */
export declare function swap<T>(array: T[], i: number, j: number): void;
/**
 * @example
 * ```ts
 * getCartesianProduct([
                [1, 2],
                [3, 4],
            ]); // => [[1, 3], [1, 4], [2, 3], [2, 4]]
 * ```
 * @returns an array containing all the combinations of one element from each array
 */
export declare function getCartesianProduct<T>(arrays: T[][]): T[][];
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