我是这样写的
@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%i in (t.txt) do (
set "str=%%i"
for /l %%i in (0,1,3) do call :lp
)
pause
goto :eof
:lp
set str1=!str:~%n%,1!
set str2=!str2!!str1!
if defined str1 set/a n+=4&goto lp
set n=&echo !str2!
set str2=
还可以简化 可以少循环一次:
@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%i in (t.txt) do (
set "str=%%i"
for /l %%i in (3,-1,1) do call :lp %%i
echo !str!
)
pause
goto :eof
:lp
set/a m=n+1
set str1=!str:~%n%,1!
set str=!str:~0,%n%!!str:~%m%!
set str2=!str2!!str1!
if defined str1 set/a n+=%1&goto lp
set n=&echo !str2!
set str2=
Last edited by terse on 2008-4-24 at 12:30 AM ]
