A* search algorithm: Difference between revisions
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The : represent nodes it did not even look at, the . those added but never gone back to, obviously x represent the path, and together _ and x all nodes actually analysed.
===Extra credit===
Well, why not. Note this does not reuse/share any code with the above, although I presume the
task author assumed it would, instead the main loop uses a priority queue to obtain the next
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