java 将 double[] 数组转换为 string[] 数组
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Converting a double[] array into string[] array
提问by MBC870
I would like to know what code to use to convert a double[] array into a string[] array
我想知道使用什么代码将 double[] 数组转换为 string[] 数组
回答by WhyNotHugo
You'll need to create a target array of equal size to the original array, and iterate over it, converting element by element.
您需要创建一个与原始数组大小相同的目标数组，并对其进行迭代，逐个元素地进行转换。
Example:
例子：
double[] d = { 2.0, 3.1 };
String[] s = new String[d.length];
for (int i = 0; i < s.length; i++)
s[i] = String.valueOf(d[i]);
回答by marc wellman
As already mentioned you have to iterate and convert every item from double to String.
如前所述，您必须迭代并将每个项目从双精度转换为字符串。
Alternatively it's also possible to avoid an explicit iteration and do the following:
或者，也可以避免显式迭代并执行以下操作：
// source array
Double[] d_array = new Double[] { 1, 2, 3, 4 };
// create a string representation like [1.0, 2.0, 3.0, 4.0]
String s = Arrays.toString(d_array);
// cut off the square brackets at the beginning and at the end
s = s.substring(1, s.length - 1);
// split the string with delimiter ", " to produce an array holding strings
String[] s_array = s.split(", ");
