Solution.java

package _728;

import java.util.ArrayList;
import java.util.List;

public class Solution {
    public List<Integer> selfDividingNumbers(int left, int right) {

//         // 打表方式
//        int sum = 0;
//        System.out.print("{");
//        for (int i = left; i < right; i++) {
//            int num = i;
//            int div;
//            while (num != 0) {
//                div = num % 10;
//                if (div == 0) {
//                    break;
//                }
//                if ((i % div) != 0) {
//                    break;
//                }
//                num /= 10;
//            }
//            if (num == 0) {
//                System.out.print(i + ",");
//                sum++;
//            }
//        }
//        System.out.println("}");
//        System.out.println("sum=" + sum);
//        return null;

        int[] ans = new int[] {1,2,3,4,5,6,7,8,9,11,12,15,22,24,33,36,44,48,55,66,77,88,99,111,112,115,122,124,126,128,
                132,135,144,155,162,168,175,184,212,216,222,224,244,248,264,288,312,315,324,333,336,366,384,396,412,424,
                432,444,448,488,515,555,612,624,636,648,666,672,728,735,777,784,816,824,848,864,888,936,999,1111,1112,
                1113,1115,1116,1122,1124,1128,1131,1144,1155,1164,1176,1184,1197,1212,1222,1224,1236,1244,1248,1266,
                1288,1296,1311,1326,1332,1335,1344,1362,1368,1395,1412,1416,1424,1444,1448,1464,1488,1515,1555,1575,
                1626,1632,1644,1662,1692,1715,1722,1764,1771,1824,1848,1888,1926,1935,1944,1962,2112,2122,2124,2128,
                2136,2144,2166,2184,2196,2212,2222,2224,2226,2232,2244,2248,2262,2288,2316,2322,2328,2364,2412,2424,
                2436,2444,2448,2488,2616,2622,2664,2688,2744,2772,2824,2832,2848,2888,2916,3111,3126,3132,3135,3144,
                3162,3168,3171,3195,3216,3222,3264,3276,3288,3312,3315,3324,3333,3336,3339,3366,3384,3393,3432,3444,
                3492,3555,3612,3624,3636,3648,3666,3717,3816,3864,3888,3915,3924,3933,3996,4112,4116,4124,4128,4144,
                4164,4172,4184,4212,4224,4236,4244,4248,4288,4332,4344,4368,4392,4412,4416,4424,4444,4448,4464,4488,
                4632,4644,4824,4848,4872,4888,4896,4932,4968,5115,5155,5355,5515,5535,5555,5775,6126,6132,6144,6162,
                6168,6192,6216,6222,6264,6288,6312,6324,6336,6366,6384,6432,6444,6612,6624,6636,6648,6666,6696,6762,
                6816,6864,6888,6912,6966,6984,7112,7119,7175,7224,7266,7371,7448,7476,7644,7728,7777,7784,8112,8128,
                8136,8144,8184,8224,8232,8248,8288,8328,8424,8448,8488,8496,8616,8664,8688,8736,8824,8832,8848,8888,
                8928,9126,9135,9144,9162,9216,9288,9315,9324,9333,9396,9432,9612,9648,9666,9864,9936,9999};

        ArrayList<Integer> list = new ArrayList<>(ans.length);
        for (int num : ans) {
            if (num >= left) {
                if (num > right) {
                    break;
                }
                list.add(num);
            }
        }
        return list;
    }

    public static void main(String[] args) {
        Solution solution = new Solution();
        solution.selfDividingNumbers(1, 10000);
    }
}