精华I
我31楼的代码还是没有考虑到数值前面有n位相同的情况，再次修改如下：
@echo off&setlocal enabledelayedexpansion
set "str=%random% %random% -%random% %random% %random% %random% -%random% "
for %%i in (%str%) do call,set var=!var! n%%in
for %%i in (%var%) do set a=%%i&call :lp
echo !var:n=!
pause>nul&goto :eof
:lp
for %%i in (%var%) do (
set b=%%i&set b=!b:~1,-1!&set c=%a:~1,-1%
if !b! lss !c! (
set var=!var:%a% =!
set var=!var:%%i=%%i %a%!
)
)
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