数组是Java中最基础也最高效的数据结构之一，但原生数组在打印、比较、排序、查找等操作上存在诸多不便。java.util.Arrays作为官方工具类，通过静态方法封装了排序、二分查找、复制、填充、内容比较与集合转换等高频操作，大幅降低数组处理成本。其底层设计兼顾算法效率与工程实践：对象数组 ...

本内容遵循CC 4.0 BY-SA版权协议 Java 的 java.util 包，对很多开发者和面试准备者来说都是再熟悉不过的老朋友了。ArrayList、HashMap、LinkedList 这些名字几乎每天都会出现在代码里，但说实话，真正能把这一整套数据结构实现用明白、说清楚的人，并没有想象中那么多。

An array in Java is a container object that holds a fixed number of values of a single type. The length of an array is established when the array is created and cannot be changed.

LeetCode刷题记录 - Java版. Contribute to XU-123-456-max/LeetCode-java development by creating an account on GitHub.

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