为什么有人想要使用链表而不是数组?
毫无疑问，编码一个链表比使用数组要多一些工作，人们可能会想知道如何才能证明这些额外的工作是合理的。
我认为在链表中插入新元素是微不足道的，但在数组中这是一个主要的任务。与将数据存储在数组中相比，使用链表存储一组数据还有其他优点吗?
这个问题不是这个问题的重复，因为另一个问题是专门问一个特定的Java类，而这个问题是关于一般数据结构的。
当前回答
链表比数组的维护开销更大，它还需要额外的内存存储，所有这些都是一致的。但是有一些事情是数组做不到的。在很多情况下，假设你想要一个长度为10^9的数组你无法得到它，因为必须有一个连续的内存位置。链表可能是这里的救世主。
假设你想用数据存储多个东西，那么它们可以很容易地扩展到链表中。
STL容器通常在后台有链表实现。
其他回答
Eric Lippert最近发表了一篇关于数组应该保守使用的原因之一的文章。
为什么有人想要使用链表而不是数组?
这只是一个原因——如果你需要一个链表数据结构，而你所使用的编程语言不支持指针。
为什么是链表而不是数组?有些人已经说过，插入和删除的速度更快。
但也许我们不需要生活在两者的限制下，同时获得两者的优点……是吗?
对于数组删除，您可以使用'Deleted'字节来表示一行已被删除的事实，因此不再需要重新组织数组。为了减轻插入或快速更改数据的负担，可以使用链表。然后，在引用它们的时候，让你的逻辑先搜索一个，再搜索另一个。因此，将它们结合使用可以使您获得两者的最佳效果。
If you have a really large array, you could combine it with another, much smaller array or linked list where the smaller one hold thes 20, 50, 100 most recently used items. If the one needed is not in the shorter linked list or array, you go to the large array. If found there, you can then add it to the smaller linked list/array on the presumption that 'things most recently used are most likey to be re-used' ( and yes, possibly bumping the least recently used item from the list ). Which is true in many cases and solved a problem I had to tackle in an .ASP security permissions checking module, with ease, elegance, and impressive speed.
对我来说是这样的，
Access Linked Lists allow only sequential access to elements. Thus the algorithmic complexities is order of O(n) Arrays allow random access to its elements and thus the complexity is order of O(1) Storage Linked lists require an extra storage for references. This makes them impractical for lists of small data items such as characters or boolean values. Arrays do not need an extra storage to point to next data item. Each element can be accessed via indexes. Size The size of Linked lists are dynamic by nature. The size of array is restricted to declaration. Insertion/Deletion Elements can be inserted and deleted in linked lists indefinitely. Insertion/Deletion of values in arrays are very expensive. It requires memory reallocation.
It's easier to store data of different sizes in a linked list. An array assumes every element is exactly the same size. As you mentioned, it's easier for a linked list to grow organically. An array's size needs to be known ahead of time, or re-created when it needs to grow. Shuffling a linked list is just a matter of changing what points to what. Shuffling an array is more complicated and/or takes more memory. As long as your iterations all happen in a "foreach" context, you don't lose any performance in iteration.
