使用Java-8 Streams API将字符串列表转换为映射 [英] Convert List of Strings into Map using Java-8 Streams API

问题描述

我有List

List<String> cars = Arrays.asList("Ford", "Focus", "Toyota", "Yaris","Nissan", "Micra", "Honda", "Civic");

现在，我可以将此列表转换为我获得ford = focus，Toyota = yaris，Nisan = Micra，Honda =使用Java 8 Streams API的Civic？

Now, can I convert this List into Map where I get ford = focus, Toyota = yaris, Nisan = Micra, Honda = Civic using Java 8 Streams API?

推荐答案

下面是一个关于如何做到的例子： p>

Here is an example on how you could do it :

 Map<String, String> carsMap =
            IntStream.iterate(0, i -> i + 2).limit(cars.size() / 2)
                    .boxed()
                    .collect(Collectors.toMap(i -> cars.get(i), i -> cars.get(i + 1)));

基本上，每迭代2个元素并将其与下一个元素进行映射。

请注意，如果元素数量不是偶数，则不会考虑最后一个元素。

Basically, just iterates over every 2 elements and maps it with the next one.
Note that if the number of elements is not even, it won't take into consideration the last element.

这篇关于使用Java-8 Streams API将字符串列表转换为映射的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！