CSP 201312-2 ISBN号码 Java

模拟题，没有什么算法，直接按照题目的步骤完成即可

import java.util.*;

public class Main {
    
    
    public static void main(String[] args) {
    
    
        Scanner input = new Scanner(System.in);
        
        String str = input.next();
        
        int sum = 0;
        for (int i = 0, j = 1; i < 11; i++) {
    
    
            if (str.charAt(i) != '-') {
    
    
                sum += (str.charAt(i) - '0') * j;
                j++;
            }
        }
        //System.out.println(sum);
        sum %= 11;
        
        if ((sum == 10 && str.charAt(12) == 'X') || str.charAt(12) - '0' == sum) {
    
    
            System.out.println("Right");
        } else {
    
    
            System.out.println(str.substring(0, 12) + (sum == 10 ? "X" : sum)); 
        }
        
        input.close();
    }
}