今天同事在做一个需求的时候，需要设计到二维数组的排列组合为题，就趁这个机会，实现了这个功能，现记录一下；

public static void main(String[] args) {
        List<String[]> list = new ArrayList<>();
        list.add(new String[]{"A", "B", "C"});
        list.add(new String[]{"D", "E", "F"});
        list.add(new String[]{"X", "Y", "Z"});

        for (int i = 0; i < list.size() - 1; i++) {
            list.set(i + 1, combo(list.get(i), list.get(i + 1)));
        }
        String[] resultList = list.get(list.size() - 1);
        for (int i = 0; i < resultList.length; i++) {
            if (i % 10 == 0 && i != 0){
                System.out.println();
            }
            System.out.print(resultList[i] +"\t");
        }
    }

    public static String[] combo(String[] arr1, String[] arr2) {
        String[] newArr = new String[arr1.length * arr2.length];
        int k = 0;
        for (String s : arr1) {
            for (String ss : arr2) {
                newArr[k] = s + ":" + ss;
                k++;
            }
        }
        return newArr;
    }

结果如图所示：