编辑代码

public class dg {
    public static void dg(int n) {
        if(n == 1) {
            System.out.println("1");
        } else {
            dg(n-1);
            
            StringBuilder line = new StringBuilder();
            for(int i=0; i<n; i++) {
                line.append(n).append(" ");
            }
            System.out.println(line);
        }
    }
    
    public static void main(String[] args) {
        int n = 5;
        dg(n);
    }
}