Re: Help needed with List!

• To: mathgroup at smc.vnet.net
• Subject: [mg16970] Re: Help needed with List!
• From: phbrf at t-online.de (Peter Breitfeld)
• Date: Thu, 8 Apr 1999 02:32:57 -0400
• References: <7ec5kg\$cu2@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```alvaroo at my-dejanews.com <alvaroo at my-dejanews.com> schrieb:
> Sirs Probably these are FAQs but I am new in this newsgroup and I have
> not been able to solve them. I use Mathematica 3.0: (i) I need to
> convert a long integer number in List format. For example if I had the
> number 123456 I need to convert it into {1,2,3,4,5,6}: Is it possible
> with an instruction?And, (ii) I need to delete from a List A the
> common elements with other List B: for example if A = {1,2,3,4} and B
> = {1,2} I need to delete by an instruction the elements 1, 2 of List B
> from List A to obtain List C = {3,4}. I am working with integers with
> 10.000 digits or more so you can appreciate how helpful for me it
> would be to solve these questions. Thanks in advance. alvaroo

(i) is done by

In[1]:= IntegerDigits[123456,10]
Out[1]= {1,2,3,4,5,6}

or
In[1]:= IntegerDigits[123456,8]
Out[1]= {3,6,1,1,0,0}

(ii) is done by

In[2]:= Complement[{1,2,3,4},{1,2}]
Out[2]= {3,4}

es gruesst
Peter
--
=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=
Peter Breitfeld, Saulgau, Germany        PGP public key:  08548045

```

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