编辑代码

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