Parallel For

[seany]

On Tuesday, 15 June 2021 at 07:41:06 UTC, jfondren wrote:
> On Tuesday, 15 June 2021 at 06:39:24 UTC, seany wrote:
>> [...]
>
> add a `writeln(c.length);` in your inner loop and consider
> the output. If you were always pushing to the end of c, then
> only unique numbers should be output. But I see e.g. six
> occurrences of 0, four of 8 ...
>
> [...]

My attempt is to make such huge O(N^4) or O(N^5) algorithms 
faster.

Wouldn't all these calculation of unique `i` make the program 
slow?  I would like to know how to do this properly.