@echo off
setlocal enabledelayedexpansion
set "SourceFolder=C:\Test\待处理"
set "StageFolder=C:\Test\临时中转"
if not exist "%StageFolder%" (
    md "%StageFolder%"
)
for /f "delims=" %%i in ('dir /b /s /a-d "%SourceFolder%"') do (
    move /y "%%i" "%StageFolder%"
)
set FolderNum=0
for /f "delims=" %%i in ('dir /b /ad "%SourceFolder%"') do (
    set /a FolderNum+=1
    set "_!FolderNum!=%SourceFolder%\%%i"
)
set FileIndex=0
for %%i in ("%StageFolder%\*.*") do (
    set /a FileIndex+=1
    set /a FolderIndex=FileIndex%%FolderNum
    if !FolderIndex! neq 0 (
        call move /y "%%%%i" "%%_!FolderIndex!%%"
    ) else (
        call move /y "%%%%i" "%%_!FolderNum!%%"
    )
)
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@echo off & setlocal enabledelayedexpansion
for /f "delims=" %%a in ('dir /b/ad') do (
     set /a_%%a=0,m+=1
     set files=!files! %%a
     for /f "delims=" %%b in ('dir /b/a-d "%%~fa\*.jpg"') do (
          set /a _%%a+=1
          set $%%a_!_%%a!=%%b
     )
)
for %%a in (!files!) do set/a n+=_%%a
set /a p=n/m,q=n%%p
for %%a in (!files!) do (
     if !q! gtr 0 (
        set /a q-=1,#p_%%a=p+1
     ) else set /a#p_%%a=p
     if !_%%a!  lss !#p_%%a! (
         set files=!files: %%a=!
         set "$#=!$#!:%%a"
     ) else  if !_%%a!  equ !#p_%%a!  set files=!files: %%a=!
)
if not "#!files: =!" == "#" for %%a in (!files!) do (
     set /a i=_%%a - #p_%%a
     for /l %%b in (1,1,!i!) do (
          for /f "delims=:" %%c in ("!$#!") do (
               if  !_%%c! geq !#p_%%c! (
                   set "$#=!$#:*%%c:=!"
                   for /f "delims=:" %%c in ("!$#!") do set "f=%%c"
              ) else set "f=%%c"
          )
          for %%c in ("!f!") do  (
               move "%%a\!$%%a_%%b!"   "%%~c\"
               set /a _%%~c+=1
          )
     )
)
pause
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