QuickSorting An Array
نویسنده
چکیده
The article is a walk through a DATA step implementation of one of the most versatile, fast, and well-rounded sorting algorithms Quicksort. Although a need in array sorting frequently arises in practical SAS programming, Base SAS does not provide a function or call routine to serve the purpose. However, the SAS Language is flexible and powerful enough to implement just about any algorithm. In this paper, Quicksort is presented as an encapsulated macro routine with simple invocation rules. Compared to a similar routine presented at SUGI 24, the one given below has been recoded from ground up. As a result, it has become more robust, richer on features, and about twice as efficient.
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