Could anyone help me to solve the issue in the following code

code:

unused_rows=1:12
while ~isempty(unused_rows)
rows_matrix=reshape(unused_rows,[],2)
rows_matrix(:,end)=rows_matrix(end:-1:1,end)
for k=1:size(rows_matrix,1)
    rows=rows_matrix(k,:)
    unused_rows=[];
end
end

The above code executes and gives me the result.

with respect to the command line

rows_matrix=reshape(unused_rows,[],2)

I am getting the result to be

rows_matrix =
     1     7
     2     8
     3     9
     4    10
     5    11
     6    12

But I want to display the result in the following manner.

rows_matrix =
     1     9
     2     8
     3     7
     4    12
     5    11
     6    10

Could anyone please help me on this.

Answer 1

[Raj]

May not be the best way but it works:

rows_matrix=reshape(unused_rows,[],2)
rows_matrix=[rows_matrix(:,1) [sort(rows_matrix(1:3,2),'descend');sort(rows_matrix(4:6,2),'descend')]]

[jaah navi]

with respect to code

unused_rows=1:12
rows_matrix=reshape(unused_rows,[],3)
rows_matrix(:,end)=rows_matrix(end:-1:1,end)

i am getting the following result with respect to the command line

rows_matrix=reshape(unused_rows,[],3)

rows_matrix =

1 5 9

2 6 10

3 7 11

4 8 12

and with respect to the command line

rows_matrix(:,end)=rows_matrix(end:-1:1,end)

rows_matrix =

1 5 12

2 6 11

3 7 10

4 8 9

But i want to have the result in the following manner

rows_matrix =

1 5 10

2 6 9

3 7 12

4 8 11

Could you help me on this.

[Raj]

I would say again using the same thought process :

unused_rows=1:12
rows_matrix=reshape(unused_rows,[],3)
rows_matrix(:,end)=rows_matrix(end:-1:1,end)
rows_matrix=[rows_matrix(:,1) rows_matrix(:,2) [sort(rows_matrix(3:4,3),'descend');sort(rows_matrix(1:2,3),'descend')]]

[jaah navi]

I too tried with the same command by yesterday itself .Anyway thanks for your reply