how to shift rows to right and left of matrix ?

Question

elor hdd 2021-8-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1438234-how-to-shift-rows-to-right-and-left-of-matrix

评论： elor hdd 2021-8-21

I want to shift the rows of the matrix to the right if A<B with shift step numbers c or left if A>B with shift step numbers c

v = [1,2 ,3;4,5,6;7,8,9];
[m,n]=size(v);
A=[3 2 1];
B=[2 5 2];
c=[4 1 3];%shift step number c
for i=1:m
    for j=1:n
       if A(i)<B(i) %shift row to right with shift step number c 
         p(i,j)=circshift(v(i,j),c(i),2)
       else 
          p(i,j)=circshift(v(i,j),-c(i),2) %shift row to left with shift step number c 
       end 
    end 
end 

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Answer 1

Stephen23 2021-8-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1438234-how-to-shift-rows-to-right-and-left-of-matrix#answer_771984

在 MATLAB Online 中打开

M = [1,2,3;4,5,6;7,8,9]
M = 3×3
     1     2     3
     4     5     6
     7     8     9
A = [3,2,1];
B = [2,5,2];
c = [4,1,3];
for k = 1:size(M,1)
    if A(k)<B(k) %shift row to right with shift step number c 
        M(k,:) = circshift(M(k,:),c(k));
    else %shift row to left with shift step number c 
        M(k,:) = circshift(M(k,:),-c(k));
    end 
end
M
M = 3×3
     2     3     1
     6     4     5
     7     8     9