如何在Java中将数组的所有元素初始化为任何特定值 [英] How to initialize all the elements of an array to any specific value in java

问题描述

在C/C++中，我们具有memset()函数，可以满足我的愿望，但是在Java中，我如何将所有元素初始化为特定值?每当我们写int[] array=new int[10];时，这都会简单地初始化一个大小为10的数组，其中所有元素都为零.我只想为我的一个数组更改此初始化整数.即我要初始化一个数组，该数组的所有元素均等于-1.否则，我必须在初始化后立即放置一个for循环，其范围从索引0到索引size-1，并且在该循环内部，我正在将元素分配给-1.下面是用于更多理解的代码-

In C/C++ we have memset() function which can fulfill my wish but in Java how can i initialize all the elements to a specific value? Whenever we write int[] array=new int[10]; , this simply initialize an array of size 10 having all elements equal to zero. I just want to change this initialization integer for one of my array. i.e. I want to initialize an array which has all elements equal to -1. Otherwise I have to put a for loop just after initialization, which ranges from index 0 to index size-1 and inside that loop, I am assigning element to -1. Below is the code for more understanding-

    int[] array = new int[10];
    for (int i = 0; i < size; i++) {
        array[i] = -1;
    }

我做对了吗?还有其他方法可以做到吗?

Am i going correct? Is there any other way for the same?

推荐答案

如果是原始类型，则可以使用Arrays.fill():

If it's a primitive type, you can use Arrays.fill():

Arrays.fill(array, -1);

[顺便说一句，C或C ++中的memset仅对char数组真正有用.]

[Incidentally, memset in C or C++ is only of any real use for arrays of char.]

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