【ArrayList：键盘录入多个数据，以 0 结束，并在控制台输出最大值】

package com.companyname.common.test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

/**
 * @Description 键盘录入多个数据，以0结束，并在控制台输出最大值
 * @Author Created by shusheng
 * @Email shusheng@yiji.com
 * @Date 2018/12/14
 */
public class ArrayListDemo {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        ArrayList<Integer> arrayList = new ArrayList<Integer>();

        while(true){
            System.out.println("请输入数据：");
            int number = scan.nextInt();
            if(number!=0){
                arrayList.add(number);
            }else{
                break;
            }
        }

        Integer[] i = new Integer[arrayList.size()];
        arrayList.toArray(i);
        Arrays.sort(i);

        System.out.println("数组是：" + arrayToString(i) + ",最大值是:"+ i[i.length - 1]);
    }

    private static String arrayToString(Integer[] i) {
        StringBuilder sb = new StringBuilder();

        sb.append("[");
        for(int x=0;x<i.length;x++){
            if(x==i.length-1){
                sb.append(i[x]);
            }else{
                sb.append(i[x]+",");
            }

        }
        sb.append("]");
        return sb.toString();
    }
}