How to sort a matrix by row based on an index array

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JFz
JFz 2018-1-8
回答： Stephen23 2018-1-8
Hi, I have an index array ib which is a result of two table joining. I have a matrix M, I would like to sort M by rows according to ib. For example, if ib is [2, 1, 3], I would like the 2nd row to move up to be the first row. How to do that? Thanks!

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Stephen23
Stephen23 2018-1-8
M(ib,:)

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