Find the best sum of numbers in an array for a given value.

bestsum.js

//jsFiddle: http://jsfiddle.net/CuDzh/3/

$(function() {

    function bestSum(numbers, sum) {
        l = function(index, total, solution) {
            index = index ? index : 0;
            total = total ? total : 0;
            solution = solution ? solution : '';

            if (total == sum) {
                return solution.substring(1).split(' ');
            } else if (index < numbers.length) {
                return l(index + 1, total, solution) || l(index + 1, (total + numbers[index]), solution + ' ' + numbers[index]);
            }

            return false;
        }
        return l();
    }

    //e.g. To find the best combination of numbers that equal 6 from the 'numbers' array.
    var numbers = [2, 2, 1, 1, 1, 3];
    var sum = 6;

    console.log(bestSum(numbers, sum));

});