clc;
m=input(' number of row= ');
n=input (' number of column =');
x=randi ([0,10],m,n)
r=m/2;
for i=1:1:r
for j=1:1:r
virtual=x(i+r,j+r);
x(i+r,j+r)=x(i,j);
virtual2=x(i+r,j);
x(i+r,j)=x(i,j+r);
x(i,j+r)= virtual2;
end
x(i,j)=virtual
end
