@echo off&setlocal enabledelayedexpansion
set "str1=我想"&set "str2=要的效果"
for %%a in (*.txt) do (
  set /a q=2,l=0,n=0
  for /f "tokens=2 delims=:" %%b in ('find /v /c "" "%%a"') do set /a h=%%b-1
  (for /f "delims=" %%c in ('type "%%a"') do (
  set /a l+=1
  set /a x="1/(!q!-!l!)",y="1/(!h!-!l!)" 2>nul&&(
     echo %%c
  )||(
     set com="(echo %%c^&echo,)|findstr /o "$""&set "str=%%c"
     for /f "delims=:" %%d in ('!com!') do set /a id="(%%d-2)/2"
     set /a n+=1
     for /f "tokens=1-2 delims= " %%e in ("!n! !id!") do echo !str:~,%%f!!str%%e!!str:~%%f!
  )
  ))>"%%~na.$$$"
)
::ren *.$$$ *.txt
复制代码

@echo off
for %%i in (*.txt) do (
   set /a n=0,m=0
   for /f "usebackq delims=" %%a in ("%%i") do set /a m+=1
   (for /f "usebackq delims=" %%a in ("%%i") do (
      set /a n+=1
      set /a "1/(n-2)" 2>nul||echo,我想
      set /a "1/(m-n)" 2>nul||echo,要的效果
      echo,%%a
   ))>$
   move $ "%%i"
)
pause
复制代码