[MATLAB基础] matlab中for循环语句的问题

[fangqing86]

请教matlab中有两个120*60的矩阵A1，B1，如果要实现如下的情况：

A1(:,1)=A1(:,1)*0.5+B1(:,60)*0.5; B1(:,60)=A1(:,1)*0.5+B1(:,60)*0.5;
A1(:,2)=A1(:,2)*0.5+B1(:,59)*0.5; B1(:,59)=A1(:,2)*0.5+B1(:,59)*0.5;
A1(:,3)=A1(:,3)*0.5+B1(:,58)*0.5; B1(:,58)=A1(:,3)*0.5+B1(:,58)*0.5;
A1(:,4)=A1(:,4)*0.5+B1(:,57)*0.5; B1(:,57)=A1(:,4)*0.5+B1(:,57)*0.5;

……

A1(:,20)=A1(:,4)*0.5+B1(:,41)*0.5; B1(:,41)=A1(:,20)*0.5+B1(:,41)*0.5;

那么用for循环语句该如何编写呢