| Age | Commit message (Collapse) | Author | 
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|  | Recursive implementation with proper indenting! | 
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|  | An index is a pointer, and they don't change if the vector decides to
reallocate internally unlike the bastardised pointers I was rolling up
before.  This simplifies design a bit. | 
|  | The vector acts as an arena for the nodes to be allocated from, better
and faster than allocating each child on the heap individually. | 
|  | Pops an item off the queue and generate left and right children for it,
if those are empty.  Then push those children into the queue for the
next iteration.
NOTE: Because we're using a queue, this does a breadth first
generation of the tree, which is what we want. | 
|  | Will be used in creating the cw tree. | 
|  | Let's just deal with simplified stuff anyway? | 
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|  | Holds numerator and denominator.  Can self simplify, but not
automatically. | 
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