Java，简化检查 int 数组是否包含 int [英] Java, Simplified check if int array contains int

问题描述

基本上我的伙伴一直在说我可以通过使用不同的方式检查 int 数组是否包含 int 来缩短我的代码，尽管他不会告诉我它是什么:P.

Basically my mate has been saying that I could make my code shorter by using a different way of checking if an int array contains an int, although he won't tell me what it is :P.

当前:

public boolean contains(final int[] array, final int key) {
    for (final int i : array) {
        if (i == key) {
            return true;
        }
    }
    return false;
}

也试过这个，虽然由于某种原因总是返回false.

Have also tried this, although it always returns false for some reason.

public boolean contains(final int[] array, final int key) {
    return Arrays.asList(array).contains(key);
}

有人可以帮我吗?

谢谢.

推荐答案

这里是 Java 8 解决方案

Here is Java 8 solution

public static boolean contains(final int[] arr, final int key) {
    return Arrays.stream(arr).anyMatch(i -> i == key);
}

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