From: Li Chen <chen_li3@...>
Date: 2009-09-26T00:34:50+09:00
Subject: How to  remove duplicate elements in a 2D array

Hi all,

I have a 2D array as follow:

arr=[

     [ 'a',1,2,3],
     ['b',4,5,6],
     ['c',3,2,1],
     ['a',1.3,2.2,3,3],
     ...
     ['a', 2,1,3],
   ...
   ['a',2.1,1.5,3]

]

As you can see there are several rows containing  element 'a',
and the last row containing 'a'' is the lastest one.  I wonder if it
is possible to return a new array which contains the latest row having
'a' ,
together with other rows.


Thanks,

Li
-- 
Posted via http://www.ruby-forum.com/.