9 replies to this topic

[BAngel]

Has anyone programmed a Pascal's triangle using a PHP function? I'm attending a PHP course and that's our homework for this week and don't have any idea where to start! any help with be very grateful!

[the_reaper]

A good starting place would be the maths behind it:
http://en.wikipedia.org/wiki/Pascal's_triangle

Sounds complex, though...good luck.

[BAngel]

Yeah, I've seen the construction there and you're right... VERY COMPLEX! everybody says that my teaches is out of her mind with that homework!

[loremar]

I solved it with my beginner's level in PHP and no experience. haha this is fun!

<?php
 
$level = 10;
 
$triangle = array();
$triangle[0] = array(1);
 
for($i = 1; $i < $level; $i++)
{
$triangle[$i] = array();
$prev = 0;
 
foreach($triangle[$i-1] as $key => $value)
{
$triangle[$i][$key] = $prev + $value;
$prev = $value;
}
 
$triangle[$i][$i] = 1;
 
foreach($triangle[$i] as $key => $value)
{
print "$value ";
}
 
print '</br>';
}
?>

output:

1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1 9 36 84 126 126 84 36 9 1

[the_reaper]

Well done, loremar!

[HCN-SeriesN]

Pretty nice for a biginner coder :;

[loremar]

Thanks, studying Lua now made me a little confused with syntax in PHP. They're similar in a way, that's why it's confusing and Lua starts with index 1 in arrays. Anyways, I already have lots of experience in C/C++, so I really don't find it very hard.

[HCN-Northern]

ah lua... aint them horrible wow(world of warcraft) addons built around that?

[loremar]

HCN-Northern, on 17 January 2012 - 10:02 AM, said:

ah lua... aint them horrible wow(world of warcraft) addons built around that?

From what I see, yeah.

But the most important thing about lua they say is it speeds the development process.

[BAngel]

Wow! thanks Loremar