编辑代码

public class Main {
    public static void pri(int n, int r) {
        if (r > n) {
            return;
        }
        for (int i = 0; i < r; i++) {
            System.out.print(r + " ");
        }
        System.out.println();
        pri(n, r + 1);     
        
    }
    
    public static void main(String[] args) {
        int n = 5;
        pri(n, 1);
    }
}