public static void main(String[] args) {
        int[][] test = {{1, 3, 4, 7}, {2, 3, 4, 6, 8, 10},
                {0, 9, 10, 11, 12}};
        MergeKSortedArray m = new MergeKSortedArray();
        for (int i : m.mergeKArray(test)) {
            Printer.print(i + " ");
        }
    }