主文件夹内容(示例)
apple.txt
art.txt
berry.txt
cherry.txt
coffee.txt
..,
...
...
zebra.txt
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预期输出(子文件夹)
A
apple.txt
art.txt
B
berry.txt
C
cherry.txt
coffee.txt
...
...
...
Z
zebra.txt
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如何通过 Windows 批处理文件完成此操作?