Question

我需要编写一个循环，从用户给定的列表中获取两个值，然后在循环中使用这些值。我的问题是我似乎无法从循环中获取String中的2个值。这是我的代码：

import java.util.Scanner;

public class practice2 {
    public static void main(String[] args) {
        Scanner input = new Scanner (System.in);
        System.out.println("enter numbers seperated by commas");
        String numbers = input.nextLine();
        Scanner s = new Scanner(numbers);
        s.useDelimiter(",");
        for(int i =0; i<numbers.length(); i+=2 ) {
            int newnum = i/25;
            System.out.println(newnum);
        }
    }
}

Answer 1

在这里，要获取值 - 按以下步骤

public static void main(String[] args) {
    System.out.println("enter numbers seperated by commas");
    Scanner input = new Scanner (System.in);
    String[] numbers = input.nextLine().split(",\\s*");

    //to read number
    System.out.println(numbers[0] + " - " + numbers[1]);

    //to use them as int
    int i = Integer.parseInt(numbers[0]);
    System.out.println(++i);

}

在Java中循环，从String中获取2个值

1 个答案: