keiamy

參考以上前輩做的

@echo off&setlocal enabledelayedexpansion
set /p var=Input Alphabet: 
set n=-2
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"
for %%i in (%str%) do (
 set /a n+=2
 set %%i=!n!)
set "star=%var:~,1%"
set "end=%var:~-1%"
set /a end1=!%end%!-!%star%!+1
call echo %%str:~!%star%!,%end1%%%
pause
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