Re: split

• To: mathgroup at smc.vnet.net
• Subject: [mg73611] Re: [mg73572] split
• From: Bob Hanlon <hanlonr at cox.net>
• Date: Fri, 23 Feb 2007 04:30:04 -0500 (EST)

```The test should compare two adjacent elements (#1 and #2). You had it making the decision based on looking at only the first of the two elements.  (#) is equivalent to (#1).

z= {1, 3, 2, 6, 4, 7, 5,1,7};

Split[z,#1<=3&&#2<=3||#1>3&&#2>3&]

{{1,3,2},{6,4,7,5},{1},{7}}

Bob Hanlon

> Hi,
>
> I want to split a list, say
>
> z = {1, 3, 2, 6, 4, 7, 5,1,7};
>
> into sublist of elements that are less or equal 3.
>
> so I want to obtain
>
> {{1,3,2},{6,4,7,5},{1},{7}}
>
> How to do it? Probably by applying Split, but what to put in Test?
>
> Split[z,#<=3&] gives :
>
> {{1, 3, 2, 6}, {4}, {7}, {5}, {1, 7}}
>
> Why 6 was put in first sublist together with 1, 3, and 2 since 6>3 and
> should be together with 4 in the second sublist?
>
> Thanks,
>
> Arek

```

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