PHP Hacker rank Question solution PlusMinus Problem

Complete the plusMinus function in the editor below. It should print out the ratio of positive, negative and zero items in the array, each on a separate line rounded to six decimals.

plusMinus has the following parameter(s):

• arr: an array of integer. 

Sample Input :-----

6
-4 3 -9 0 4 1   

Sample Output



0.500000
0.333333
0.166667


Explanation




There are  positive numbers,  negative numbers, and  zero in the array. 
The proportions of occurrence are positive: , negative:  and zeros: .


Solution :===============================================


<?php

/* Write your PHP code here */

$arr = array(-4 ,3 ,-9, 0, 4, 1);




function now($arr){

$p = 0;

$n = 0;

$z = 0;

$total = count($arr);

    for($i=0;$i<$total; $i++){

        if($arr[$i]>0){

          $p = $p+1;  

        }elseif($arr[$i]<0){

            $n = $n+1;

        }else{

            $z =$z+1;

        }

    }

    $p = $p/$total;

    $n = $n/$total;

    $z = $z/$total;

    $p =  sprintf("%0.6f",$p);

    $n =  round($n,6);

    $z = round($z,6);

 $a = array($p,$n,$z);

 return $a;

}

print_r(now($arr));




   

?>