用*打印一个空的三角形
- PHP中文网Original
- 2016-05-25 16:58:081908browse
1. [文件] 1.php
<?php
$n=5;
for($i=1;$i<=$n;$i++){
//在打印*前，先打印空格
for($k=1;$k<=$n-$i;$k++){
echo" ";
}
//内层控制每层*的个数
for($j=1;$j<=($i-1)*2+1;$j++){
//如果是第一层和最后一层
if($i==1||$i==$n){
echo '*';
}else{
if ($j==1||$j==($i-1)*2+1) {
echo"*";
}else{
echo " ";
}
}
}
echo'<br/>';
}
?>2. [PHP]代码
<?php
$n=5;
for($i=1;$i<=$n;$i++){
//在打印*前，先打印空格
for($k=1;$k<=$n-$i;$k++){
echo" ";
}
//内层控制每层*的个数
for($j=1;$j<=($i-1)*2+1;$j++){
//如果是第一层和最后一层
if($i==1||$i==$n){
echo '*';
}else{
if ($j==1||$j==($i-1)*2+1) {
echo"*";
}else{
echo " ";
}
}
}
echo'<br/>';
}
?>
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