我可以声明和初始化在Java中相同的指令数组？ [英] Can I declare and initialize an array with the same instruction in Java?

问题描述

有没有办法做到在同一时间下？

Is there a way to do the following at the same time?

static final int UN = 0; // uninitialized nodes
int[] arr;

// ... code ...

arr = new int[size];
for (int i = 0; i < 5; i++) {
    arr[i] = UN;
}

基本上，我要声明改编一旦我知道它的大小将和初始化为联合国无不必循环。因此，像这样：

Basically, I want to declare arr once I know what its size will be and initialize it to UN without having to loop. So something like this:

int[] arr = new int[size] = UN;

这可能吗？

感谢。

推荐答案

没有，不符合标准库。如果你编写自己的函数，不过，你可以很容易地做到这一点在一条语句（不是指令;这些是不同的）。矿山看起来像的String [] [] =字符串Arrayu.fill（新的String [X] [Y]，）;

No, not with the standard libraries. If you write your own functions, though, you can easily do so in a single statement (not instruction; those are different). Mine looks like String[][] strings = Arrayu.fill(new String[x][y], "");

下面是一个链接。这里也有一些垃圾信息太多，虽然，我刚刚发布了电流源副本的情况下直接清除它。

Here's a link. There's some junk in there too, though; I just posted a copy of the current source directly without cleaning it up.

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