根据取模选择不同的列表

public class test1122
{
    /**
     * 根据取模选择不同的列表（保证code结尾的数字总是配置同一样的列表）
     * 请观察code与value的映射关系（规律：通过取模匹配）
     * 源需求：请保证以code结尾的号码总是匹配用一个list成员之一（列表）
     * @param args
     */
    public static void main(String[] args)
    {
        int[] code = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        String[] list =
               {"A:192.168.66.16,192.168.66.17,192.168.66.18",
                "B:192.168.66.16,192.168.66.17,192.168.66.18",
                "C:192.168.66.18,192.168.66.17,192.168.66.16",
                "D:192.168.66.18,192.168.66.17,192.168.66.16"};
        int size = list.length;
        for (int i = 0; i < code.length; i++)
        {
            int index = code[i] % size;
            System.out.println("code="+code[i]+", size="+size+", index=" + index + ", value=" + list[index]);
        }
    }
}

运行结果：

code=0, size=4, index=0, value=A:192.168.66.16,192.168.66.17,192.168.66.18
code=1, size=4, index=1, value=B:192.168.66.16,192.168.66.17,192.168.66.18
code=2, size=4, index=2, value=C:192.168.66.18,192.168.66.17,192.168.66.16
code=3, size=4, index=3, value=D:192.168.66.18,192.168.66.17,192.168.66.16
code=4, size=4, index=0, value=A:192.168.66.16,192.168.66.17,192.168.66.18
code=5, size=4, index=1, value=B:192.168.66.16,192.168.66.17,192.168.66.18
code=6, size=4, index=2, value=C:192.168.66.18,192.168.66.17,192.168.66.16
code=7, size=4, index=3, value=D:192.168.66.18,192.168.66.17,192.168.66.16
code=8, size=4, index=0, value=A:192.168.66.16,192.168.66.17,192.168.66.18
code=9, size=4, index=1, value=B:192.168.66.16,192.168.66.17,192.168.66.18