具有两个循环的简单算法[关闭]

Question

I need to write out like this:

6 5 4 3 2 
5 4 3 2 
4 3 2 
3 2 
2

i guess it's must be something like

for ($i = 6; $i > 1; $i--) {

    echo $i . " ";

}

Answer 1

Got some PHP-Fu ?

$s = 7;$e = 2;

for($i=$s;$i>$e;){
    echo implode(' ',range(--$i, $e)) . '<br>';
}

or:

for ($e = 2, $i = 5; $i--;
    print(implode(' ', range($e + $i, $e)) . "
")
);