Created
December 25, 2025 07:44
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| @if defined eratosSort goto sort | |
| @echo off | |
| setlocal enabledelayedexpansion enableextensions | |
| %= Input is either first argument or stdin =% | |
| if "%~1"=="" ( | |
| set /p n=|| goto :eof | |
| set /a n=n | |
| ) else (set /a n=%~1) | |
| ( | |
| if %n% lss 2 goto help | |
| if %n% gtr 46340 goto help | |
| %= Guess isqrt using Newton method =% | |
| %= Modified to remove adjustments for negative integers =% | |
| %= www.dostips.com/forum/viewtopic.php?f=3&t=5819&start=15#p43998 =% | |
| 2>nul set /a "sq=( x=(%n%)/(11*1024)+40, x=((%n%)/x+x)>>1, x=((%n%)/x+x)>>1, x=((%n%)/x+x)>>1, x=((%n%)/x+x)>>1, x=((%n%)/x+x)>>1 )" | |
| for /f "delims==" %%a in ('set . 2^>nul') do set "%%a=" | |
| set .2=1 | |
| if %n% gtr 2 set .3=1 | |
| for %%a in (5 7) do for /l %%i in (%%a,6,%n%) do set .%%i=1 | |
| for %%a in (5 7) do for /l %%i in (%%a,6,!sq!) do ( | |
| if defined .%%i ( | |
| set /a t=%%i*%%i | |
| for /l %%j in (!t!,%%i,%n%) do set .%%j= | |
| )) | |
| set eratosSort=1 | |
| for /f %%i in ('cmd /q /v:on /e:on /d /c "%~f0" ^| sort') do echo/%%i | |
| goto :eof | |
| ) | |
| :sort | |
| ( | |
| %= Sort numbers =% | |
| %= stackoverflow.com/a/32306526 =% | |
| (for /f "delims=.=" %%i in ('set .') do ( | |
| set "Z= %%i" | |
| echo !Z:~-5! | |
| )) | |
| goto :eof | |
| ) | |
| :help | |
| 1>&2 echo Numbers should be in range 2-46340. 46341^^2 and greater exceeds 32 bits of precision. |
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