newswan

@echo off
setlocal EnableDelayedExpansion

for /l %%a in (1,1,10) do (
	call :c %%a
)

pause
exit

:c
set/a n1=%1
set/a r = %1 %% 4
if %r% equ 1 (
	set /a n2 = n1 + 3
) else (
	set /a n2 = n1 - 1
)
set n1 = 0000%n1%
set n2 = 0000%n2%
set n1 = %n1:~4%
set n2 = %n2:~4%
echo   %n1%  n%n2%

goto :eof
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原文件名是什么样的？
如果前后文件名都是相同位数，会出现同名情况，怎么处理？

newswan

回复 19# 001011

@echo off
setlocal EnableDelayedExpansion


for %%a in ( work\*.jpg ) do (
	call :c %%a
)

pause
exit/b

:c
set n1=%~n1
set/a r=%n1% %% 4
if %r% equ 1 (
	set /a n2 = n1 + 3
) else (
	set /a n2 = n1 - 1
)
set n2=0000%n2%
set n2=%n2:~-4%
echo   work\%n1%%~x1 work\n%2%%~x1
goto :eof
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修改  "echo  work\..." 为 copy 或者 move