From: Lionel Bouton <lionel-subscription@...>
Date: 2007-11-27T02:25:03+09:00
Subject: Re: Removing duplicates and substrings from an array

Lionel Bouton wrote the following on 26.11.2007 18:20 :
> yermej wrote the following on 26.11.2007 18:15 :
>   
>> On Nov 26, 9:15 am, Sam Larbi <sla...@gmail.com> wrote:
>>   
>>     
>>> Note:  parts of this message were removed by the gateway to make it a legal Usenet post.
>>>
>>> I've got an array of strings, say like:
>>>
>>> ["Bob", "John", "Bobby", "John"]
>>>
>>> I want to remove duplicates and elements that are substrings of other
>>> elements.  Therefore, the above array would become:
>>>
>>> ["John","Bobby"]
>>>       
>> This should work:
>>
>> arr = ["Bob", "John", "Bobby", "John"]
>> arr.uniq!
>> arr.reject {|a| arr.any? {|b| b != a and b =~ /#{a}/}}
>>   
>>     
>
> You'll have surprises if there's a "." element...
>
> arr = ["Bob", "John", "Bobby", "John"]
> arr.uniq!
> arr.reject {|a| arr.any? {|b| b != a and a.index(b) } }
>   

Oups: I misread the question.

It should be b.index(a) (I rejected the superstrings instead of the
substrings).

Lionel