I really should have paid more attention in Algorithm's analysis. Sigh. Maybe I'll take the next level of it when I go back to grad school. You are right. Sort is an implementation of QuickSort ( O(n log n) using lots of memory) while Fisher-Yates is O(n) with a constant defined only by how long it takes to do the rand and the swap. (We had that discussion already. <grin>) So this makes sense. And of course, this defends my suggestion that Fisher-Yates is preferable to the one-liner. Thanks tilly
, maybe one day my education will start to sink in.