Deques for Mythryl based on finger trees, with amortized O(1)
complexity, and O(log n) worst case operations.
This code implements deques using finger trees.
Previous implementations of deques (e.g. in Haskell) were based on 2-3
trees with size-annotating nodes.
This code was written in Mythryl: http://www.mythryl.org
This implementation is based on finger trees of plain, always balanced
binary trees; to this effect the finger structure has been modified to
allow easy assembling and disassembling of trees, by intermixing trees
with items. This should improve performance, and reduces code size by
remove the need for additional rebalancing steps.
Copyright (c) 2012 Michele Bini <firstname.lastname@example.org>
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