好东西

				function out=convert(num,step,K)
				%num待转化的十进制数，step进制数，K转化后位数
				quotient=num;
				conv_num=zeros(1,K);
				flag=0;
				for k=1:K
				    if quotient>1
				        conv_num(k)=rem(quotient,step);
				        quotient=floor(quotient/step);
				    elseif quotient==1
				        conv_num(k)=1;
				        quotient=0;
				    else
				       conv_num(k)=0; 
				    end
				end
				out=fliplr(conv_num)';