PETSc version 3.17.4
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# PetscSortIntWithIntCountArrayPair

Sorts an array of integers in place in increasing order; changes an integer array and a PetscCount array to match the sorted first array.

### Synopsis

    #include "petscsys.h"
    PetscErrorCode  PetscSortIntWithIntCountArrayPair(PetscCount n,PetscInt X[],PetscInt Y[],PetscCount Z[])

Not Collective

### Input Parameters

| n | - number of values
| X | - array of integers
| Y | - second array of integers (first array of the pair)
| Z | - third array of PetscCounts (second array of the pair)

### Notes

Usually X, Y are matrix row/column indices, and Z is a permutation array and therefore Z's type is PetscCount to allow 2B+ nonzeros even with 32-bit PetscInt.

### See Also

PetscSortReal(), PetscSortIntPermutation(), PetscSortIntWithArray(), PetscIntSortSemiOrdered(), PetscSortIntWithArrayPair()

### Level

intermediate

### Location

src/sys/utils/sorti.c
Index of all Sys routines
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