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### Is there a regular tree language in which the average height of a tree of size $n$ is neither $\Theta(n)$ nor $\Theta(\sqrt{n})$?

We define a regular tree language as in the book TATA: It is the set of trees accepted by a non-deterministic finite tree automaton (Chapter 1) or, equivalently, the set of trees generated by a ...
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### distributed alpha beta pruning

I am looking for an efficient algorithm that lets me process the minimax search tree for chess with alpha-beta pruning on a distributed architecture. The algorithms I have found (PVS, YBWC, DTS see ...
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### Is there no sorting algorithm with all specific desired properties?

On the Sorting Algorithms website, the following claim is made: The ideal sorting algorithm would have the following properties: Stable: Equal keys aren't reordered. Operates in place, ...
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### Is there a faster solution for the Google Code Jam Great Wall Problem

Consider the following Google Code Jam round 1C question: The Great Wall of China starts out as an infinite line, where the height at all locations is $0$. Some number of tribes $N$, $N \le 1000$, ...
I am trying to construct all inequivalent $8\times 8$ matrices (or $n\times n$ if you wish) with elements 0 or 1. The operation that gives equivalent matrices is the simultaneous exchange of the i and ...