matlab课本程序

				function y=Ex0517(m)
				% EX0517 用循环流程控制语句创建矩阵
				y=0;
				m=m-1;
				for n=1:m
				   y=[0,y];
				end
				for n=1:m
				   a=1:n;
				   b=a;
				   for k=m:-1:n
				      b=[0,b];
				   end
				   y=[b;y];
				   n=n+1; 
				end