Undo/Redo using Memento: Stack, Queue or just LinkedList?
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by serhio
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Published on 2010-02-25T10:58:19Z
Indexed on
2010/05/03
19:58 UTC
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What is the best having when implementing Memento pattern (for Undo/Redo)
in witch collection to Keep Mementos?
Basically, I need this(c = change, u = undo, r = redo):
0
*c
-1 0
*c
-2 -1 0
*c
-3 -2 -1 0
<u
-2 -1 0 1
*c
-3 -2 -1 0
Variants:
- LinkedList - possible in principle, maybe not optimized.
- Queue - not adapted for this task, IMO.
- Stack - not adapted for undo AND redo;
- Double Stack - maybe optimal, but can't control the undo maximum size.
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