为什么在Java中使用并行数组？ [英] Why use parallel arrays in Java?

问题描述

Java中的并行数组是否有任何实际用例？维护相互关联的N个数组似乎太麻烦了。

Is there any real use case for parallel arrays in Java? It seems too cumbersome to maintain N arrays which are interrelated.

示例：

int  ages[]   = {0,          17,        2,          52,         25};
String names[] = {"None",    "Mike",    "Billy",    "Tom",      "Stan"};
int  parent[] = {0,          3,         1,          0,          3};

我可以创建一个Person类并将对象存储在一个数组中。会贵一点，但是很容易使用吗？

I can just create a class Person and store objects in one single array. Will be little more expensive, but much easy to use right?

推荐答案

并行数组是Basic等语言的延续一）没有数组以外的数据结构。您应该按照建议定义对象。

Parallel arrays are a holdover from languages like Basic (the original one) that had no data structures other than arrays. You should define objects as you suggest, instead.

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