递归法打印乘法表

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

public class RecurTable {
    public static void main(String[] args) {
        printTable(9);
    }

    static void printTable(int maxLine) {

        for (int i = 1; i <= maxLine; i++) {
            System.out.println(getLine(i));
        }
    }


    static List<Integer> getLine(int lineNumber) {
        List<Integer> list;
        if (lineNumber == 1) {
            list = new ArrayList<>();
            list.add(1);
            return list;
        } else {
            list = getLine(lineNumber - 1);
            for (int i = 0; i < list.size(); i++) {
                list.set(i, list.get(i) + i + 1);   //下一行中每一列都对应加列号

            }
            list.add(list.get(list.size() - 1) + lineNumber);
        }
        return list;
    }
}

运行效果图：