uniqueAndCount

gistfile1.txt

        function uniqueAndCount(list) {
            var index = 0,
                num = 0;
            var result = [];
            for (var i = 0; i < list.length; i++) {
                if ($.inArray(list[i], result) < 0) {
                    result.push(list[i]);
                    while ($.inArray(list[i], list, index) > -1) {
                        num++;
                        index = $.inArray(list[i], list, index) + 1;
                    }
                    result.push(num);

                    num = 0;
                    index = 0;
                }

            }
            return result;
        }