namejm写的批处理

				@echo off
				:: 对数字由大到小排序
				:: test.txt中的内容为一个数组：123,456,2,1,6……
				:: 若文本内一行一个数字，则用:_sort一段代码就可以了，但是，
				:: 需要注意的是， findstr /v ^!max!$ test.txt 并不能过滤掉最后一行内容
				:: 除非最后一行是个空行。也就是说，findstr过滤行的时候，只能识别行分隔符号，
				:: 没有行分隔符号，则不认为是一行。
				:: code by jm 2006-10,4 CMD@XP
				copy test.txt test.bak>nul
				cd.>test.txt
				for /f %%i in (test.bak) do call :split "%%i,:"
				
				setlocal enabledelayedexpansion
				:_sort
				for /f %%i in (test.txt) do (
				    set /a max=%%i
				    for /f %%j in (test.txt) do (
				        set /a num=%%j
				        if !num! gtr !max! (set max=!num!) else (set max=!max!)
				    )
				    echo !max!
				    >test1.txt findstr /v ^!max!$ test.txt
				    move test1.txt test.txt
				    goto _sort
				)
				move test.bak test.txt
				pause
				goto :eof
				
				:split
				for /f "tokens=1* delims=," %%i in (%1) do (
				    >>test.txt echo %%i
				    if not "%%j"==":" call :split "%%j"
				)
				goto :eof
				
				通过对创建的文件大小来对数字进行排序
				code by 3742668 2006-10-4
				fsutil file createnew %%i %%i语句执行速度太慢，换成for /l %%j in (1,1,%%i) do echo.>>%%i语句将使效率大为提升(-jm注)
				@echo off
				    set numbers=%random% %random% %random% %random% %random% %random% %random% %random%
				    echo 排序前数字为: %numbers%
				    md sort_tmp && pushd sort_tmp
				    for %%i in (%numbers%) do fsutil file createnew %%i %%i >nul
				    echo 从小到大排列:
				    dir /os /b
				    popd && rd /s /q sort_tmp
				pause
				goto :eof
				
				通过数字大小的比较来排序
				但是 call :sort !str:%num%=! 一句会导致出错
				@echo off
				setlocal enabledelayedexpansion
				    set numbers=%random% %random% %random% %random% %random% %random% %random% %random%
				    echo 排序前数组为: %numbers%
				    call :sort %numbers%
				    echo 排序后数组为: %ret%
				pause
				goto :eof
				
				:sort
				    set num=%1
				    set str=%*
				    for %%i in (%*) do if !num! gtr %%i set num=%%i
				    set ret=%ret% %num%
				    if not "!str:%num%=!" == "" call :sort !str:%num%=!
				goto :eof