编辑代码

public class Main {
    public static void printPattern(int n, int i) {
        if (i > n) {
            return;
        }
        for (int j = 1; j <= i; j++) {
            System.out.print(i + " ");
        }
        System.out.println();
        printPattern(n, i + 1);
    }

    public static void main(String[] args) {
        System.out.println("递归算法:");
        int n = 5;
        printPattern(n, 1);


        System.out.println("非递归算法：");
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(i + " ");
            }
            System.out.println();
        }
    }
}