从单行给出的控制台读取数字，用空格分隔 [英] Read numbers from the console given in a single line, separated by a space

问题描述

我的任务是读取 单行中的 n 给定数字，由 空格 ( ) 从控制台.

I have a task to read n given numbers in a single line, separated by a space ( ) from the console.

当我读取 单独行 (Console.ReadLine()) 上的每个数字时，我知道该怎么做，但是当我遇到数字在同一行.

I know how to do it when I read every number on a separate line (Console.ReadLine()) but I need help with how to do it when the numbers are on the same line.

推荐答案

您可以使用String.Split.您可以提供要用于将字符串拆分为多个的字符.如果您没有提供所有 空白被假定为拆分字符(所以换行符、制表符等):

You can use String.Split. You can provide the character(s) that you want to use to split the string into multiple. If you provide none all white-spaces are assumed as split-characters(so new-line, tab etc):

string[] tokens = line.Split(); // all spaces, tab- and newline characters are used

或者，如果您只想使用空格作为分隔符:

or, if you want to use only spaces as delimiter:

string[] tokens = line.Split(' ');

如果你想将它们解析为 int 你可以使用 Array.ConvertAll():

If you want to parse them to int you can use Array.ConvertAll():

int[] numbers = Array.ConvertAll(tokens, int.Parse); // fails if the format is invalid

如果要检查格式是否有效，请使用 int.TryParse.

If you want to check if the format is valid use int.TryParse.

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