数组array arraylist区别-阿里云

Java 数组（Array）与集合（List、ArrayList ...）的区别

ArrayArray 长度固定，如果删除或者新增都需要重新排列所有数据，开销很大。 Array（数组）是基于索引(index)的数据结构，它使用索引在数组中搜索和读取数据是很快的。List可以给自动扩容，而数组初始化的时候就应该给指定大小。而且 List 的方法很多，对里面的元素操作起来也方便。其...

数组(Array)和列表(ArrayList)具体有什么区别？

数组(Array)和列表(ArrayList)有什么区别？

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更新时间 2024-04-30 03:19:58

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