China DOS Union

Long time no issue, today I'll make one for newcomers, and veterans please skip:

Title:
Now there is a one-to-one correspondence between a-z and 1-26. Now we need to use batch processing to randomly get 10 different values from 52 values of 1-26 and a-z (all regarded as values). For example, 1 and a, 26 and z are regarded as the same value.

Requirements:
The code is efficient, concise, general, and does not generate temporary files.

Bonus:
Add 10 points if the code fully meets the requirements.

It seems that now there are more people asking for code, and really few who come with the purpose of learning. Alas...

Sigh.. Not much popularity..

The difficulty is too great, I don't understand enough. Can't take it. I'm not here for the code.

I am dull-witted, sincerely seeking to become an apprentice. Those who like to take apprentices come!

It's really hard to make a decision... Although I really want to move it up, but am I considered an old hand?

I'll add another water post, hey, there's no way. Some people are all transitioning to bathome.

It feels quite difficult... Alas. Continue my snail - like learning journey.

DOS is blind. It's difficult. Take your time.

Tips: Focus more on the correspondence one by one

Oh, I'm dizzy, didn't expect it to be so difficult...

[ Last edited by BC on 2008-8-25 at 08:32 AM ]

@echo off
setlocal EnableDelayedExpansion
set nu=a b c d e f g h i j k l m n o p q r s t u v w x y z
set n=0
:_loop
if %n% geq 10 (goto _end)
set /a n=%n%+1
set /a unx=%random%%%26+1
for /f "tokens=%unx% delims= " %%i in ('echo %nu%')do echo %n% %%i %unx%
goto _loop
:_end

Is this the case???
Or set nu= a-z + 1-26
set unx=%random%%%52+1 ????

[ Last edited by daker on 2008-8-25 at 12:06 AM ]

The LZ means that if 3 has already appeared, then 3 cannot appear again, and c cannot appear. a-1, b-2, c-3... are all in one - to - one correspondence.

@echo off
setlocal enabledelayedexpansion
set num=1234567890
set wor=abcdefghijklmnopqrstuvwxyz
:a1
set /a var1=%random%%%26+1
set /a var2=%random%%%9+1
if %var1% equ %var2% (goto :a1)
if %var1% lss 1 ( goto :a1 )
set key1=!wor:~%var1%,9!
set key2=!num:~%var2%,1!
echo %key1%%key2%
pause
Got a very lazy method, and it's not very in line with the topic, but my ability is just that much...
Hope some experts can give guidance...

```batch
@echo off
Setlocal Enabledelayedexpansion
set _w=0abcdefghijklmnopqrstuvwxyz
set _p=0
for /l %%i in (1 1 26) do (set w%%i=!_w:~%%i,1!
set _w%%i=%%i)
:xz
set /a _p+=1
if %_p%==11 goto show
set /a xzx=%random%%%2
set /a xzp=%random%%%26+1
if %xzx%==0 set show%_p%=%xzp%
if %xzx%==1 set show%_p%=!w%xzp%!
goto xz
:show
for /l %%i in (1,1,10) do set /p =!show%%i! <nul
pause>nul
但不能判断是否重复....
望前辈指教
```