> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/perl6-rosettacode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/perl6-rosettacode/programming_tasks/s/sorting-algorithms/bubble_sort.md).

# Bubble sort

```perl
sub bubble_sort (@a) {
    for ^@a -> $i {
        for $i ^..^ @a -> $j {
            @a[$j] < @a[$i] and @a[$i, $j] = @a[$j, $i];
        }
    }
}
```