[文本处理] 求助：图片文件重命名的批处理

@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%i in ('dir /b /a-d *.png') do (
    set /a n=%%~ni+1
    ren "%%i" "!n!.tem"
)
ren "*.tem" "*.png"
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@echo off
cd /d "%~dp0"
setlocal enabledelayedexpansion
REM 假设最大数字是999，最小数字是0
for /l %%i in (999,-1,0) do (
    if exist "%%i.png" (
        set /a NewNum=%%i+1
        ren "%%i.png" "!NewNum!.png"
    )
)
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@echo off
set a = 0
cd "%~dp0"
:chuli
set /a b = a+=1
if exist %a%.png ren %a%.png %b%.png
if exist %b%.png goto break
set /a a+=1
goto chuli
:break
echo end
pause
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@echo off

for %%a in (0 1 2 3 4 5 6 7 8) do (
set /a n=%%a+1
for %%b in (*.png) do (
echo "%%b"| findstr /e /rc:"%%a.png[ -#]" >nul&& set m=%%~nb
if defined m (
setlocal enabledelayedexpansion
if "!m:~0,-1!" neq "" (
rename "!m!.png" "!m:~0,-1!!n!.tmpdb_"
) else (
rename "!m!.png" "!n!.tmpdb_"
)
endlocal
set m=
)
)
)

setlocal enabledelayedexpansion
for /l %%i in (9,10,9999) do (
set /a l=%%i+1
rename "%%i.png" "!l!.tmpdb_" 2>nul
)
endlocal

rename "*.tmpdb_" "*.png"
pause&exit/b
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