在数组(list什么的都可以)中高效查找相同形式(前缀一致后缀数字递增)的key的问题 - V2EX
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udonmai

在数组(list什么的都可以)中高效查找相同形式(前缀一致后缀数字递增)的key的问题

  •   
  •   udonmai Oct 30, 2012 4827 views
    This topic created in 4954 days ago, the information mentioned may be changed or developed.
    PHP实现

    现在有一个array
    有约100个key

    其中无序分布着几个我想要的key
    这些我想要的key都是形如 hoshi_1 hoshi_2 hoshi_3 ... 这样的(就是前缀一致，后缀递增的数字)

    想知道我怎么能够把这些都找出来?
    或者直接找出有几个类似 hoshi_? 这样的key 有什么比较好的办法？
    要求性能比较好

    其他语言的实现也可以，看了也许可以收到启发~
  • key
  • hoshi
  • 后缀
    4 replies    1970-01-01 08:00:00 +08:00
    luin
        1
    luin  
       Oct 30, 2012
    遍历一遍数组就可以了啊
    udonmai
        2
    udonmai  
    OP
       Oct 30, 2012
    @luin 有比遍历更好的么。。。还是说只能遍历。。。
    luin
        3
    luin  
       Oct 30, 2012
    @udonmai 你说的这种情况只能遍历...
    udonmai
        4
    udonmai  
    OP
       Oct 30, 2012
    @luin 如果后端给出这样的key有几个，就好了。。。
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