Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Smoothing Data Array PHP

Posted on 2009-07-10
3
Medium Priority
?
358 Views
Last Modified: 2013-12-13
I have an array:
Array
(
    [1] => 25
    [2] => 50
    [3] => 25
)
I would like to make it into:
Array
(
    [1] => 50
    [2] => 50
)
To do this I split the middle value between 1 and 3. This is the simplest example, where the split is 50,50. I would like to be able to take a 15 element array down to 6 elements.

Any ideas?


Additional Examples

[10, 15, 20, 25] Reduced to two elements: 25(10 + 15),45(20 + 25)
[10, 10, 10, 10, 11] Reduced to two elements: 25(10 + 10 + (10/2)),26((10/2) + 10 + 11)
0
Comment
Question by:nbcit
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 9

Expert Comment

by:xBellox
ID: 24825652
This should work just fine:

<script language="javascript">
function makeItTwo(arr) {
	var retArr = new Array(0, 0); // return array
	if ((arr.length % 2)){
		var middle = Math.floor(arr.length/2); // middle element
		retArr[0] += arr[middle]/2; // add value
		retArr[1] += arr[middle]/2; // add value
	};
	last = arr.length-1; // Last element
	for (i=0; i<last; i++) { // first and last, first+1 and last-1...first+n and last-n
		retArr[0] += arr[i];
		retArr[1] += arr[last];
		last--;
	};
	return retArr;	
};
 
// Testing
var arrTest1 = new Array(10,15,15,25,25,20);
var arrTest2 = new Array(10,15,14,10,20,10,22,25,20);
alert(makeItTwo(arrTest1));
alert(makeItTwo(arrTest2));
</script>

Open in new window

0
 

Author Comment

by:nbcit
ID: 24825801
Mind posting a php solution :D. Also I used 2 for ease of explanation, it could be any whole number.
0
 
LVL 9

Accepted Solution

by:
xBellox earned 2000 total points
ID: 24826032
Sorry, I didn't see that is in php, I had done various JavaScript function here today :)

Please tell how this array should result with 3 and 5 elements:

array(10,15,14,10,20,10,22,25,20);



In advance for two elements in php will be something like this:

<?
function makeIt($arr) {
	$retArr = array_fill(0, 2, 0); // return array
	
	if ((count($arr) & 1)){
		$middle = floor(count($arr)/2); // middle element
		$retArr[0] += $arr[$middle]/2; // add value
		$retArr[1] += $arr[$middle]/2; // add value
	};
	$last = count($arr)-1; // Last element
	for ($i=0; $i<$last; $i++) { // first and last, first+1 and last-1...first+n and last-n
		$retArr[0] += $arr[$i];
		$retArr[1] += $arr[$last];
		$last--;
	};
	return $retArr;	
};
 
// Testing
$arrTest1 = array(10,15,15,25,25,20);
$arrTest2 = array(10,15,14,10,20,10,22,25,20);
print_r(makeIt($arrTest1));
print_r(makeIt($arrTest2));
 
?>

Open in new window

0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is intended for those who are new to PHP error handling (https://www.experts-exchange.com/articles/11769/And-by-the-way-I-am-New-to-PHP.html).  It addresses one of the most common problems that plague beginning PHP develop…
Originally, this post was published on Monitis Blog, you can check it here . In business circles, we sometimes hear that today is the “age of the customer.” And so it is. Thanks to the enormous advances over the past few years in consumer techno…
This video teaches viewers how to create their own website using cPanel and Wordpress. Tutorial walks users through how to set up their own domain name from tools like Domain Registrar, Hosting Account, and Wordpress. More specifically, the order in…
Learn how to set-up PayPal payment integration in your Wufoo form. Allow your users to remit payment through PayPal upon completion of your online form. This is helpful for collecting membership payments, customer payments, donations, and more.

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question