阵列索引是否存在 [英] Does Index of Array Exist

问题描述

我在工作中继承了一些非常难闻的代码。我希望找到最无痛的解决方案。

I've inherited some code at work that has a really bad smell. I'm hoping to find the most painless solution possible.

有没有办法检查某个任意数字是否是数组中的有效元素？

Is there a way to check if some arbitrary number is a valid element in an array?

示例 - 我需要检查数组[25]是否存在。

Example - I need to check if array[25] exists.

我更愿意这样做而不做一个foreach（ ）通过数组找到行。

Preferably I would prefer to do this without doing a foreach() through the array to found the rows.

有没有办法做到这一点，还是我坚持使用foreach循环？

Is there any way to do this, or am I stuck with foreach loop?

推荐答案

测试长度

int index = 25;
if(index < array.length)
{
    //it exists
}

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