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array managing (Read 245 times)
joester5
array managing
Feb 10th, 2009, 12:57am  
What's the most elegant way to move an element in an array to the last position?
For example, take position 1 and put it at the end.
from
{ "OH", "NY", "CA", "DE" };
to
{ "OH",  "CA", "DE", "NY" };

Thanks
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danielle
Re: array managing
Reply #1 - Feb 10th, 2009, 6:34am  
No elegant way other than doing it manually (store "NY" into a temp variable, shift everything over, put it at the end).

However, the Vector class of java (which you can just type into processing without any trouble) is much better at this type of thing, with methods for removing objects (and adding at the end, inserting at a particular points, etc), plus a toArray() method that will spit out an array version of whatever the Vector contains...

This taks would simply be (untested!):

myVector.add(myVector.remove(1));
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PhiLho 
Re: array managing
Reply #2 - Feb 10th, 2009, 10:25am  
danI is right, arrays are fast but a bit inflexible for this kind of operation.
But I will advocate the use of ArrayList over the older, slower, a bit obsolete Vector.
Note that Java offers other Collections, like LinkedList or ArrayDeque (like a stack), that might be better suited for some tasks.
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