jsp输出金字塔的简单实例

<%   String str = "";  for(int i = 1; i <= 5; i++){    for(int j = 1; j <= 5-i; j++){      str +="&nbsp;&nbsp;&nbsp;&nbsp;";    }    for(int k = 1; k <= 2*i-1; k++){      str +="☆";    }    str +="<br>";}%><%= str %>