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还是用补位效率高

@echo off&setlocal enabledelayedexpansion
set str=3 2008 11 19 777 23 2014 453 789 51
for %%i in (%str%) do (
    set str=0000000000%%i
    set .!str:~-10! !random!=%%i
)
for /f "tokens=2 delims==" %%i in ('set .') do set/p=%%i <nul
pause>nul
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