如何从 Java 的一行输入中读取多个整数值? [英] How to read multiple Integer values from a single line of input in Java?

问题描述

我正在开发一个程序，我希望允许用户在出现提示时输入多个整数.我曾尝试使用扫描仪，但我发现它只存储用户输入的第一个整数.例如:

I am working on a program and I want to allow a user to enter multiple integers when prompted. I have tried to use a scanner but I found that it only stores the first integer entered by the user. For example:

输入多个整数:1 3 5

Enter multiple integers: 1 3 5

扫描器只会获取第一个整数 1.是否可以从一行中获取所有 3 个不同的整数，并在以后使用它们?这些整数是我需要根据用户输入操作的链表中数据的位置.我无法发布我的源代码，但我想知道这是否可行.

The scanner will only get the first integer 1. Is it possible to get all 3 different integers from one line and be able to use them later? These integers are the positions of data in a linked list I need to manipulate based on the users input. I cannot post my source code, but I wanted to know if this is possible.

推荐答案

我一直在hackerrank/leetcode上使用它

I use it all the time on hackerrank/leetcode

    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String  lines = br.readLine();    
        
    String[] strs = lines.trim().split("\s+");
            
    for (int i = 0; i < strs.length; i++) {
    a[i] = Integer.parseInt(strs[i]);
    }

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