how to return column index in matrix

how i return column number when i have matrix 300 on 3 when the constrain is: idx(i) = number of the column with the min number in the row, example:

     8     1     6
     3     5     7
     4     9     2
idx(1) = 2
idx(2) = 1
idx(3) = 3

:)

Answer 1

[James Tursa]

x = your original matrix
[~,idx] = min(x,[],2);

Answer 2

[Star Strider]

Use the min function with 2 outputs:

M = [8     1     6
     3     5     7
     4     9     2];

[~,idx] = min(M,[],2)

idx =
     2
     1
     3