如何将 int[] 转换为 List<Integer>在爪哇? [英] How to convert int[] into List<Integer> in Java?
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问题描述
在Java中如何将int[]
转换成List
?
How do I convert int[]
into List<Integer>
in Java?
当然,除了逐项循环进行之外,我对任何其他答案都感兴趣.但是,如果没有其他答案,我会选择最能表明此功能不是 Java 一部分的事实.
Of course, I'm interested in any other answer than doing it in a loop, item by item. But if there's no other answer, I'll pick that one as the best to show the fact that this functionality is not part of Java.
推荐答案
从 int[]
转换为 List
as 没有捷径Arrays.asList
不处理装箱,只会创建一个 List
这不是你想要的.你必须制定一个实用方法.
There is no shortcut for converting from int[]
to List<Integer>
as Arrays.asList
does not deal with boxing and will just create a List<int[]>
which is not what you want. You have to make a utility method.
int[] ints = {1, 2, 3};
List<Integer> intList = new ArrayList<Integer>(ints.length);
for (int i : ints)
{
intList.add(i);
}
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