Added pre-class questions for 9/1
Added pre-class questions for 9/1

toscanosaul/lecture,ianvermeulen/lecture,kenlimmj/cs5220,zejin/lecture,a7c/lecture,xinyiwang/lecture,sheroze1123/lecture,jyk46/lecture,patcao/lecture,ecartee/lecture,ggranito/lecture,bangrui/lecture,jtcdbob/CS-5220-Parallel-Computing,cubgs53/lecture,WensiWu/lecture,ScottSWu/lecture,dbindel/lecture,rcarson3/lecture,nimz/lecture,lbacker/lecture,littlespace0/lecture,bae43/lecture,gz94/lecture,canondetortugas/lecture,ianvermeulen/lecture,WensiWu/lecture,rchiodi/lecture,py75/lecture,rgp62/lecture,mwhittaker/lecture,emg222/lecture,hwcxy2014/lecture,sanianagpal/lecture,calvinwylie/lecture,bangrui/lecture,cubgs53/lecture,ecartee/lecture,smltng/lecture,toscanosaul/lecture,lherrle/lecture,bangrui/lecture,jason-setter/lecture,jyk46/lecture,hugogogo/lecture,a7c/lecture,rcarson3/lecture,calvinwylie/lecture,SaurabhNetra/lecture,batuinal/lecture,daveckman/lecture,xinyiwang/lecture,zejin/lecture,xl483/5220-lecture,ecartee/lecture,nimz/lecture,amirajdhawan/lecture,rchiodi/lecture,xzmartee/lecture,etremel/lecture,ggranito/lecture,jason-setter/lecture,yalcinozhabes/lecture,smltng/lecture,amirajdhawan/lecture,hwcxy2014/lecture,ericlee0803/lecture,TJSong/lecture,kenlimmj/cs5220,xl483/5220-lecture,SaurabhNetra/lecture,7inyu/lecture,cubgs53/lecture,toscanosaul/lecture,Unmukt36/lecture,batuinal/lecture,sheroze1123/lecture,7inyu/lecture,patcao/lecture,py75/lecture,yalcinozhabes/lecture,xzmartee/lecture,a7c/lecture,jesustilapia/lecture,canondetortugas/lecture,hugogogo/lecture,mtg79/lecture,emg222/lecture,patcao/lecture,Unmukt36/lecture,jtcdbob/CS-5220-Parallel-Computing,kenlimmj/cs5220,TJSong/lecture,huangyuan1993/lecture,daveckman/lecture,dbindel/lecture,dbindel/lecture,warrencrowell/lecture,calvinwylie/lecture,canondetortugas/lecture,lherrle/lecture,hwcxy2014/lecture,warrencrowell/lecture,JiayiZhou1993/lecture,cornell-cs5220-f15/lecture,cornell-cs5220-f15/lecture,etremel/lecture,huangyuan1993/lecture,rgp62/lecture,mwhittaker/lecture,ianvermeulen/lecture,bae43/lecture,ericlee0803/lecture,littlespace0/lecture,ScottSWu/lecture,emg222/lecture,sanianagpal/lecture,ggranito/lecture,gz94/lecture,lbacker/lecture,amirajdhawan/lecture,mtg79/lecture,mwhittaker/lecture