modify kmeans function bug and so on
modify kmeans function bug and so on

ashwini0529/algorithms-1,qvex/algorithms,switchkiller/algorithms,lanbing510/Algorithms,fw1121/algorithms,NoSmartNoMan/algorithms,tempbottle/algorithms,fengzhyuan/algorithms,ashwini0529/algorithms-1,dumubuchenglin/algorithms,jacklicn/algorithms,hengwusanren/algorithms,allengaller/algorithms,M4573R/algorithms-1,NoSmartNoMan/algorithms,xtaci/algorithms,sigma-random/algorithms,fw1121/algorithms,noname007/algorithms,qvex/algorithms,jacklicn/algorithms,greyg00s/algorithms,shijiaxing/algorithms,xtaci/algorithms,fengzhyuan/algorithms,zhenglaizhang/algorithms,dumubuchenglin/algorithms,noname007/algorithms,xmfbit/algorithms,M4573R/algorithms-1,lanbing510/Algorithms,greyg00s/algorithms,tempbottle/algorithms,shijiaxing/algorithms,xmfbit/algorithms,ee08b397/algorithms-1,hengwusanren/algorithms,switchkiller/algorithms,zhenglaizhang/algorithms,allengaller/algorithms,ee08b397/algorithms-1,sigma-random/algorithms