标题：哪天返回

public class demo2 {

    public static void main(String[] args) {
        int begin = 1;
        int day = 1;
        int total = 1;
        while (total < 108) { //不满足跳出，满足继续
            day++;
            begin = begin + 2;
            total = total + begin;
        }
        System.out.println(day);
    }
}

输出：11

学校要比赛算法了，得加加油了！！！