求助一个寻路算法问题 - V2EX
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y051313

求助一个寻路算法问题

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  •   y051313 Mar 1, 2021 1479 views
    This topic created in 1883 days ago, the information mentioned may be changed or developed.
    有一个指定大小的数组,需要按照用户指定的步数从左上角走到右小角,给出一条路径。

    例如一个 9X9 的数组,用户指定 15 步,则给出一条从左上角[0,0]走到[8,8]的 15 步路径。路径本身不能交叉,请问有什么思路吗?

    目前想到的办法是穷尽所有的可能路径,请问有别的办法吗?
    5 replies    2024-10-22 20:45:56 +08:00
    zxCoder
        1
    zxCoder  
       Mar 1, 2021
    只要给出任意一条?

    那按贪吃蛇那样走不就好了,先走边缘,如果还有步数,就根据剩余步数的多少拐一拐
    also24
        2
    also24  
       Mar 1, 2021
    指定 15 步的意思是不能多也不能少?

    那就双向广搜吧,一边 7 一边 8 的时候得到答案。
    also24
        3
    also24  
       Mar 1, 2021 via Android
    补充一下,第一步先做个奇偶性剪枝
    Claar
        4
    Claar  
       Mar 2, 2021 via iPhone
    双向搜索感觉 ok
    隐约有种想 dp 的感觉
    xuelang
        5
    xuelang  
       Oct 22, 2024
    广度优先或者 A* 启发搜索。我都有实现可视化演示,代码开源,看这里

    [A star 寻路算法]( https://gallery.selfboot.cn/zh/algorithms/astar)
    [BFS 寻路]( https://gallery.selfboot.cn/zh/algorithms/bfs_path)
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