Data Structures Key Mind

线性表

数组

数组是将元素在内存中连续存放,由于每个元素占用内存相同,可以通过下标迅速访问数组中任何元素。但是如果要在数组中增加一个元素,需要移动大量元素,在内存中空出一个元素的空间,然后将要增加的元素放在其中。同样的道理,如果想删除一个元素,同样需要移动大量元素去填掉被移动的元素。如果应用需要快速访问数据,很少或不插入和删除元素,就应该用数组。

链表

链表恰好相反,链表中的元素在内存中不是顺序存储的,而是通过存在元素中的指针联系到一起。比如:上一个元素有个指针指到下一个元素,以此类推,直到最后一个元素。如果要访问链表中一个元素,需要从第一个元素开始,一直找到需要的元素位置。但是增加和删除一个元素对于链表数据结构就非常简单了,只要修改元素中的指针就可以了。如果应用需要经常插入和删除元素你就需要用链表数据结构了。

原文链接

栈(stack)是限制插入和删除只能在一个位置上进行的表,该位置是表的末端,叫做栈的顶(top)。对栈的基本操作有push(进栈)和pop(出栈)。

栈有两种实现:

  1. 链表
  2. 数组

栈的应用

  1. 括号匹配
  2. 表达式计算
  3. 函数调用

队列

与栈不同之处在于一端进一端出。

队列的应用

对资源进行处理需排队等候


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原文:大专栏  Data Structures Key Mind

原文地址:https://www.cnblogs.com/petewell/p/11597812.html

时间: 2024-11-13 09:06:36

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