There is not enough memory to keep all the numbers and therefore radix sort is no viable solution. But I think you actually meant counting sort, but this will n

There is not enough memory to keep all the numbers and therefore radix sort is no viable solution. But I think you actually meant counting sort, but this will not work either. It requires 100,000,000 slots each 20 bits wide for a total of almost 238.5 MiB.