## Version 1.0.0

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### ME22 Permute a sparse matrix given row and column permutations

Given a sparse complex matrix $A={\left\{{a}_{ij}\right\}}_{n×n}$ and a row permutation matrix $P$ and a column permutation matrix $Q$, this subroutine performs the permutation $Â=PAQ$. The non-zero elements of $A$ are stored by rows in a compact form and the user deﬁnes the permutation matrices $P$ and $Q$ by index vectors of length $n$.