如何从一个字符串中提取多个数字？

Question

I want to extract three doubles from this string. The is a space between the numbers but nothing else.

string A = "3.1415 2.71828 1729.0"

Answer 1

Use the Split() method.

string[] nums = A.Split(' ');

Then do the conversion.

Updated: Changed double quotes to single quotes

Answer 2

You can do this by using the String.Split() method combined with LINQ:

string A = "3.1415 2.71828 1729.0";
double[] numbers = A.Split().Select(x=>double.Parse(x.Replace(".",","))).ToArray();

In the above example the decimal numbers in string A are converted from string to double and stored in a double array, but if you want to store your decimal numbers as separate strings in a string array then use:

string[] numbers = A.Split();