尘丶

@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%a in (1.txt) do (
    set a=&set n=
    set "j=%%a"
    for /l %%b in (0,1,50) do ( 
	set k=!j:~%%b,1!
	if !k!==a set n=1
	if defined n (
	   set a=!a!!k!
	) else (
	  if not "!k!"=="0" set a=!a!!k!
	)
  )
echo;!a!
)
pause
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