ARCHIVED: Sort the rows of a Matlab matrix according to one of the columns

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The MATLAB function sortrows(A,j) sorts the rows of the matrix a based on the entries of the j-th column. For example, enter the following in MATLAB:

A = [1 2 3 
     3 0 9
     6 5 4]
B = sortrows(A,2)
C = sortrows(A,3)

You will receive the following output:

B =
   3     0     9
   1     2     3
   6     5     4


C =
   1     2     3
   6     5     4
   3     0     9

Note:

By default, the command sortrows(A) (without the j parameter) sorts by the first column of A, decides ties by the second column, decides further ties by the third column, and so on. For a three-column matrix, sortrows(A) is equivalent to sortrows(A,[1 2 3]).

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