Hashmap instead of a linear search issue number is #1074 #1110
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Improve Performance #1074
https://github.com/AtsushiSakai/PythonRobotics/blob/ad600cd9023e67cd8064b678213d6586d076dd15/PathPlanning/AStar/a_star_searching_from_two_side.py#L80C1-L117C20
In the referenced function, the search for coordinates and neighbors in
ob_listandneighborsoccurs frequently, especially for long obstacles. This change optimizes the process by storing obstacles and neighbors in a set. Sets use a hashmap for lookups, significantly improving efficiency compared to linear search. This modification aims to enhance performance in scenarios with long obstacle lists by reducing the time complexity of lookups