Radix Sort is a sorting algorithm that processes digit-by-digit sort.
The idea is to perform the sorting from Least Significant Bit(LSD) to Most Significant Bit(MSD) with Auxillary Stable sort, where stable sort means that while sorting a particular range of numbers preserve the order of numbers which are equal
for more understanding on the topic, refer to http://en.wikipedia.org/wiki/Radix_sort
