如何确定数组是否包含 Java 中的特定值? [英] How do I determine whether an array contains a particular value in Java?

问题描述

我有一个 String[] 的值如下:

I have a String[] with values like so:

public static final String[] VALUES = new String[] {"AB","BC","CD","AE"};

给定String s，有没有什么好办法测试VALUES是否包含s?

Given String s, is there a good way of testing whether VALUES contains s?

推荐答案

Arrays.asList(yourArray).contains(yourValue)

警告:这不适用于基元数组(见评论).

Warning: this doesn't work for arrays of primitives (see the comments).

String[] values = {"AB","BC","CD","AE"};
boolean contains = Arrays.stream(values).anyMatch("s"::equals);

要检查 int、double 或 long 的数组是否包含值，请使用 IntStream, DoubleStream 或 LongStream 分别.

To check whether an array of int, double or long contains a value use IntStream, DoubleStream or LongStream respectively.

int[] a = {1,2,3,4};
boolean contains = IntStream.of(a).anyMatch(x -> x == 4);

这篇关于如何确定数组是否包含 Java 中的特定值?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！