array list

简明释义

数组表

英英释义

例句

1.When iterating over an array list 数组列表, be careful not to modify it while looping.

在遍历数组列表 array list 时，要小心不要在循环中修改它。

2.An array list 数组列表 is a great choice for storing a list of items that may change frequently.

对于存储可能频繁变化的项目列表，数组列表 array list 是一个很好的选择。

3.To sort the elements in an array list 数组列表, you can use the Collections.sort() method.

要对数组列表 array list 中的元素进行排序，可以使用Collections.sort()方法。

4.You can easily add or remove elements from an array list 数组列表 without worrying about its capacity.

你可以轻松地从数组列表 array list 中添加或删除元素，而不必担心其容量。

5.In Java, an array list 数组列表 can dynamically grow in size.

在Java中，数组列表 array list 可以动态增长大小。

作文

In modern programming, data structures play a crucial role in how we store and manipulate information. One of the most commonly used data structures is the array list, which provides a flexible way to manage a collection of items. An array list is essentially a resizable array that can grow and shrink as needed, allowing developers to efficiently handle varying amounts of data without worrying about fixed sizes. This dynamic nature makes it an ideal choice for many applications, from simple programs to complex systems.The primary advantage of using an array list is its ability to automatically adjust its size. Unlike traditional arrays, which require a predefined length, an array list can expand when new elements are added. For instance, in a scenario where a user is collecting data points from a sensor, the number of readings may vary. Using an array list, the program can seamlessly accommodate additional readings without requiring manual adjustments to the array size.Moreover, array lists provide significant ease of use when it comes to accessing elements. Each item in an array list is indexed, which means that you can quickly retrieve or modify any element by its position. This is particularly useful in situations where time efficiency is critical, such as in gaming or real-time data processing applications.However, it's important to note that while array lists offer many benefits, they also come with some drawbacks. One potential issue is performance. When an array list reaches its capacity and needs to resize, it must create a new larger array and copy the existing elements over, which can be time-consuming for large datasets. Therefore, understanding the expected size of the data can help optimize the performance of an array list by initializing it with a suitable capacity.Another consideration is that array lists are generally less memory efficient than linked lists, especially when dealing with a large number of deletions and insertions. The overhead of maintaining an array list can lead to wasted memory if not managed properly. Developers need to weigh these factors when deciding whether to use an array list or another data structure.In conclusion, the array list is a powerful data structure that offers flexibility and ease of use for managing collections of data. Its ability to resize dynamically makes it suitable for a wide range of applications, although it is essential to consider performance implications and memory usage. By understanding how to effectively utilize an array list, programmers can enhance their coding efficiency and create more robust applications.

在现代编程中，数据结构在我们存储和处理信息的方式中起着至关重要的作用。最常用的数据结构之一是数组列表，它提供了一种灵活的方式来管理一组项目。数组列表 本质上是一个可调整大小的数组，可以根据需要增长和缩小，使开发人员能够高效地处理变化的数据量，而无需担心固定的大小。这种动态特性使其成为许多应用程序的理想选择，从简单的程序到复杂的系统。使用数组列表的主要优点是其自动调整大小的能力。与传统数组不同，传统数组需要预定义长度，而数组列表可以在添加新元素时扩展。例如，在用户从传感器收集数据点的场景中，读取的数量可能会有所不同。使用数组列表，程序可以无缝地容纳额外的读取，而无需手动调整数组大小。此外，数组列表在访问元素方面提供了显著的易用性。数组列表中的每个项目都有索引，这意味着您可以通过其位置快速检索或修改任何元素。这在时间效率至关重要的情况下尤其有用，例如在游戏或实时数据处理应用程序中。然而，重要的是要注意，尽管数组列表提供了许多好处，但它们也存在一些缺点。一个潜在的问题是性能。当数组列表达到其容量并需要调整大小时，它必须创建一个新的更大数组并复制现有元素，这对于大型数据集来说可能是耗时的。因此，了解数据的预期大小可以通过以合适的容量初始化来帮助优化数组列表的性能。另一个考虑因素是，当处理大量删除和插入时，数组列表通常不如链表内存高效。维护数组列表的开销可能导致内存浪费，因此开发人员需要在决定使用数组列表还是其他数据结构时权衡这些因素。总之，数组列表是一种强大的数据结构，提供了灵活性和易用性来管理数据集合。它动态调整大小的能力使其适用于广泛的应用程序，尽管考虑性能影响和内存使用至关重要。通过了解如何有效利用数组列表，程序员可以提高编码效率并创建更强大的应用程序。