# PetscSortRealWithArrayInt
Sorts an array of `PetscReal` in place in increasing order; changes a second `PetscInt` array to match the sorted first array. 
## Synopsis
```
#include "petscsys.h"  
PetscErrorCode PetscSortRealWithArrayInt(PetscInt n, PetscReal r[], PetscInt Ii[])
```
Not Collective


## Input Parameters

- ***n  -*** number of values
- ***i  -*** array of integers
- ***I -*** second array of integers





## See Also
 `PetscSortReal()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/utils/sortd.c.html#PetscSortRealWithArrayInt">src/sys/utils/sortd.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/utils/sortd.c)


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