cainiao736

@echo off&setlocal enabledelayedexpansion
set /p var=请按字母先后顺序输入两个字母：
set var1=%var:~0,1%
set var2=%var:~-1,1%
set str=a b c d e f g h i j k l m n o p q r s t u v w x y z
set count=1
:begin
for /f "tokens=%count%" %%i in ("!str!") do (
set /a count+=1
if %%i==!var1! set count1=!count!
if %%i==!var2! set /a count2=!count!-2
goto begin )
echo %count1% %count2%
set /a a=2*(count1-1)
set /a b=2*(count2-count1+1)
echo %a% %b%
set str1=!str:~%a%,%b%!
echo %str1%
pause
复制代码

虽然很麻烦，但是结果还是正确的...