Compare the Triplets.php

<?php
/*

PROBLEM:

Alice and Bob each created one problem for HackerRank. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty.

The rating for Alice's challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob's challenge is the triplet b = (b[0], b[1], b[2]).

The task is to find their comparison points by comparing a[0] with b[0], a[1] with b[1], and a[2] with b[2].

If a[i] > b[i], then Alice is awarded 1 point.
If a[i] < b[i], then Bob is awarded 1 point.
If a[i] = b[i], then neither person receives a point.
Comparison points is the total points a person earned.

Given a and b, determine their respective comparison points.

Example

a = [1, 2, 3]
b = [3, 2, 1]
For elements *0*, Bob is awarded a point because a[0] .
For the equal elements a[1] and b[1], no points are earned.
Finally, for elements 2, a[2] > b[2] so Alice receives a point.
The return array is [1, 1] with Alice's score first and Bob's second.

*/

// Solution
function compareTriplets($a, $b) {
    $arr = [];
    $arr[0] = 0;
    $arr[1] = 0;
    $aIndex = count($a);
    $bIndex = count($b);
    if($aIndex == $bIndex){
        for( $i = 0; $i<$aIndex; $i++ ) {
            if( $a[$i] > $b[$i]){
                $arr[0] += 1;
            }
            else if( $a[$i] < $b[$i] ) {
                $arr[1] += 1;
            }
        }
    }
    return $arr;
}


$a = [5,6,7];
$b = [5,6,7];

print_r(compareTriplets($a, $b));


?>