懒虫阿布

@echo off
setlocal enabledelayedexpansion
for /l %%i in (1,1,20) do (
	set starstr=!starstr!*
	set spacestr= !spacestr!
)

set spacelen=20
set starlen=1
:STARTLOOP
if !starlen! GTR 10 goto LOOPEND
echo !spacestr:~1,%spacelen%! !starstr:~0,%starlen%!
set /a spacelen=!spacelen!-2
set /a starlen=!starlen!+1
goto STARTLOOP
:LOOPEND
set spacelen=9
set starlen=10
:STARTLOOP2
if !starlen! LSS 1 goto LOOPEND2
echo !spacestr:~1,%spacelen%! !starstr:~0,%starlen%!
set /a spacelen=!spacelen!-1
set /a starlen=!starlen!-1
goto STARTLOOP2
:LOOPEND2
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