Author: Bruce Moreland
Date: 09:22:49 10/19/99
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On October 18, 1999 at 17:28:12, Oliver Roese wrote: >BTW, by glancing through an older crafty version i stumpeld across a remarkable >comment there. Dr. Hyatt says there, that Bubblesort has outperformed all other >sortalgorithms for a particular sortproblem! >This is amazing, since AFAIK Bubblesort is the one documented sort-algorithm >that is theoretically dominated by any other documented sort-algorithm. >Consequently it is doomed by many as the "poor-mans-sort." >Since i assume Dr. Hyatt knows what he say, we have a counterexample. >Is there a explanation to that? The explanation is that a high percentage of the time you only have to bubble up the top move or two. You don't end up sorting the whole list. If your goal is to create a sorting algorithm that puts the best element at the top of the list, and it is allowable to leave the rest undisturbed, the best algorithm is clearly the bubble sort. You just look through the elements and move the top one to the top. If you do a more complicated sort, you may sort the list faster, but the work will almost always be wasted. You can drive faster than you can run, but if you want to get to 7-11, and it's only a block or two away, it might be faster to run, since it takes time to find your keys, get in the car, start it, get out of the driveway, park at the 7-11, and get out of your car. bruce
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