qixiaobin0715

尝试用纯P试试，不需评分：

@echo off
setlocal enabledelayedexpansion
for /f "tokens=1-2 delims==" %%i in (a.txt) do (
for %%k in (%%j) do set _%%k=!_%%k! %%i
)
(for /f "tokens=1* delims=_ " %%i in ('set _') do echo,%%i%%j)>b.txt
pause
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