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swap a matrix using two vectors

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Anusha 2014-4-24

关闭： MATLAB Answer Bot 2021-8-20

an =

bn =

I need to swap these two vectors in the matrix b =

   3     2     5
   0     6     2
   2     5     1

Anusha 2014-4-24

all the 2 becomes 4 ,3 becomes 5,5 becomes 1.,etc

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the cyclist 2014-4-24

[~,idx] = ismember(b,an)
b_swapped = bn(idx)

Anusha 2014-4-24

only direct swap only. 2 to 4 and 4 to 0 directly.. no swap 2 to 0

the cyclist 2014-4-24

My algorithm does direct swap only. Run this code:

an = [2 3 5 6 0 1 4];
bn = [4 5 1 3 2 6 0];
b =  [4 3 2 5; ...
      1 0 6 2; ...
      3 2 5 1];
[~,idx] = ismember(b,an);
b_swapped = bn(idx)

I get

b_swapped =
   5     4     1
   2     3     4
   4     1     6

Isn't this exactly what you want?

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