aureooms/js-random

/**
 * Builds a choice function given a randint function.
 *
 * @param {Function} randint The randint function.
 * @return {Function} The choice function.
 */
const _choice = (randint) => {
    /**
     * Sample a single element from an array.
     *
     * @param {Array} a The input array.
     * @param {number} i Inclusive left bound.
     * @param {number} j Non-inclusive right bound.
     * @return {any} The sampled element.
     */
    const choice = (a, i, j) => {
        const x = randint(i, j);
        return a[x];
    };

    return choice;
};

export default _choice;