题解 | #学生基本信息输入输出#

用 String.format("%.2f", d); 来四舍五入

public class Main {
    public static void main(String[] args) throws IOException{
            BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
            String n = in.readLine();
            String[] s = n.split("[;,]");
            for (int i = 1; i < s.length;i++){
                    double d = Double.parseDouble(s[i]);
                    s[i] = String.format("%.2f", d);
            }
            System.out.printf("The each subject score of No. %s is %s, %s, %s.", s);
    }
}