Function GetRandom

src/utils/array/GetRandom.js:23–31

(array, startIndex, length)

 * @return {T} A random element from the array, or `null` if no element could be found in the range given.
 */
var GetRandom = function (array, startIndex, length)
{
    if (startIndex === undefined) { startIndex = 0; }
    if (length === undefined) { length = array.length; }

    var randomIndex = startIndex + Math.floor(Math.random() * (length - startIndex));

    return (array[randomIndex] === undefined) ? null : array[randomIndex];
};

module.exports = GetRandom;