Revised ShellsortAlt to include placeholder "exercises" and completed cleaning up prose.
Revised ShellsortAlt to include placeholder "exercises" and completed
cleaning up prose.

vkaravir/JSAV,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,vkaravir/JSAV,RJFreund/OpenDSA