分离整数

Question

我的问题是如何分隔整数中的数字？下面是我的代码，一切都是我想要的东西减去我无法将整数中的数字分开的事实。当我输入“12345”时，程序输出“12345”，我希望它将数字分开，这样输出就是1 2 3 4 5.

import java.util.*;

public class SNHU_Practice
{
    public static void main(String args[])
   {

       Scanner console = new Scanner(System.in);

        String input = "";
        int sum = 0;

        System.out.println( "Please enter a number: " );
        input = console.next();

        int i = 0;

        while( i < input.length() )
        {
            char temp = input.charAt(i);
            sum += Character.getNumericValue(temp);
            i++;
        }

        System.out.println( "The number entered was " + input + ". The sum     of these digits is: " + sum + "." );

    }
}

Answer 1

你可以写

input.replace("", " ").trim()

而不是input中的System.out.println。 E.g：

System.out.println( "The number entered was " + input.replace("", " ").trim() + ". The sum     of these digits is: " + sum + "." );

Answer 2

我想这就是你想要的。

    import java.util.*;

    public class SNHU_Practice{
         public static void main(String args[]){

   Scanner console = new Scanner(System.in);

    String input = "";
    StringBuilder result = new StringBuilder("");
    int sum = 0;

    System.out.println( "Please enter a number: " );
    input = console.next();

    int i = 0;

    while( i < input.length() )
    {
        char temp = input.charAt(i);
        result.append(temp + " ");
        i++;
    }

    System.out.println( "The number entered was " + input + ". The output string is " + result + "." );

}

}