编辑代码

public class Not_recursive {

    public static void print_number(int n) {
        for (int i = 1; i <= n; i++) {
            // 打印当前行的数字
            for (int j = 1; j <= i; j++) 
                System.out.print(i + " ");
            System.out.println();  // 换行
        }
    }

    public static void main(String[] args) {
        int n = 9;
        print_number(n);
    }
}