::Range.bat
set max=%1
set min=%1
:Range
if %max% lss %1 (set max=%1)
if %min% gtr %1 (set min=%1)
shift
if "%1"=="" (
set /a Range=%max%-%min%
goto :eof
) else (
goto Range
)
::求极差.bat
::调用
@echo off
call Range.bat -12 3 4 65 6-4
echo %Range%
pause
exit