随风

@echo off&setlocal enabledelayedexpansion
set "A=A1B2C3D4EFG"
set b=1g%a: =%
for /l %%i in (0 1 9) do set b=!b:%%i= %%i!
for %%i in (%b%) do set /a n+=1
set /a n-=1
echo %a%  有 %N% 个数字
pause
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