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Home Backend Development PHP Tutorial 什么叫数据结构,什么叫算法?

什么叫数据结构,什么叫算法?

Jun 06, 2016 pm 08:25 PM
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一句说清楚啥叫数据结构和算法,尽量让不懂程序的人也能听懂

这个问题已被关闭,原因:非开发直接相关的问题

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一句说清楚啥叫数据结构和算法,尽量让不懂程序的人也能听懂

数据结构就好比你的书架上的书按照什么方式摆放,
算法就是怎么快速找到书架上的某一本书

程序=数据结构+算法
数据结构是相互之间存在的一种或多种特定关系的数据元素的集合。包括4类基本的结构:集合、线形结构、树形结构、图状或网状结构。通俗点就是数据的逻辑结构,比方说这些数据在内存中以什么样的结构存放。

算法实际是编程过程中完成一件事采用的方法,比方说现实生活中做数学题时两个人都将题完成但是他们之间有一个用的时间很短就是因为采用了简便的方法。同样在编程过程中采用好的算法可以降低程序的时空复杂度

个人解释...
数据结构是将现实中所描述的事物用计算机能解释的方式组织起来。
算法是对数据结构中所描述的事物进行增删改查等运算。

个人理解

<code>数据结构:数据元素的集合,是研究怎么去组织数据
算法:完成一件事情的步骤</code>
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数据结构,有很多种描述方式。在书中比较常见是用伪码写的三元组。不论怎样描述数据结构,其核心的一点是,在定义或使用它时,得突出这种数据结构中数据元素是怎样连接在一起的和对这种数据可以施加什么操做 ,比如树 ,就是层序关系 可以施加查找等操作, 但不能施加删除边的操作 ,因为边是图这种数据结构所拥有的 。单有数据元素怎样组织在一起是没有意义的 ,因为没有操作就没有对数据的处理 ,这是数据结构与算法的关系 ,所以现在讨论数据结构 。一般是要明确这个数据结构的数据元素的组成,这个数据结构数据元素怎样组织, 和对数据结构的操作。

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