50道編程題之05:利用條件運算符的嵌套來完成此題:學習成績>=90分的同學用A表示 60-89分之間的用B表示，60分以下的用C表示

package com.demo;

/**
 * Created by 莫文龍 on 2018/3/26.
 */

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

/**
 *  利用條件運算符的嵌套來完成此題:學習成績>=90分的同學用A表示
 *  60-89分之間的用B表示，60分以下的用C表示
 */

public class Demo5 {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        ArrayList<Integer> alist = new ArrayList<>();
        ArrayList<Integer> blist = new ArrayList<>();
        ArrayList<Integer> clist = new ArrayList<>();
        String str = br.readLine();
        if (str.contains(" ")) {
            String[] split = str.split(" ");
            for (String s : split) {
                int i = Integer.parseInt(s);
                List list = i >= 90 ? alist : (i < 60 ? clist : blist);
                list.add(i);
            }
        }
        System.out.print("A:");
        for (Integer i : alist) System.out.print(i + ",");
        System.out.println();
        System.out.print("B:");
        for (Integer i : blist) System.out.print(i + ",");
        System.out.println();
        System.out.print("C:");
        for (Integer i : clist) System.out.print(i + ",");
        System.out.println();

    }

}