Case Study:

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.

We define the rating for Alice’s challenge to be the triplet A = (a0,a1,a2) , and the rating for Bob’s challenge to be the triplet B = (b0,b1,b2).

Your task is to find their comparison points by comparing with a0, with b0,a1 with b1, and a2 with b2.

• If ai > bi, then Alice is awarded point.
• If  ai < bi, then Bob is awarded point.
• If ai = bi, then neither person receives a point.

Comparison points is the total points a person earned.

Given A and B, can you compare the two challenges and print their respective comparison points?

Input Format

The first line contains 3 space-separated integers, a0,a1 , and a2, describing the respective values in triplet A.
The second line contains space-separated integers, b0, b1, and b2, describing the respective values in triplet B.

Constraints

1 <= ai <= 100
1 <= bi <= 100

Output Format

Print two space-separated integers denoting the respective comparison points earned by Alice and Bob.

Sample Input

5 6 7
3 6 10


Sample Output

1 1


Explanation

In this example:

Now, let’s compare each individual score:

• a0 > b0, so Alice receives point.
• a1 = b1, so nobody receives a point.
• a2 < b2, so Bob receives point.

Alice’s comparison score is 1, and Bob’s comparison score is 1. Thus, we print 1 1 (Alice’s comparison score followed by Bob’s comparison score) on a single line.

Solution

<?php

$handle = fopen ("php://stdin", "r"); function solve($a0, $a1,$a2, $b0,$b1, $b2){ // Complete this function$aScore = 0;
$bScore = 0;$aScore += ($a0 >$b0? 1:0) + ($a1 >$b1? 1:0) + ($a2 >$b2? 1:0);
$bScore += ($b0 > $a0? 1:0) + ($b1 > $a1? 1:0) + ($b2 > $a2? 1:0);$score = [];
array_push($score,$aScore,$bScore); return$score;
}

fscanf($handle, "%d %d %d",$a0, $a1,$a2);
fscanf($handle, "%d %d %d",$b0, $b1,$b2);
$result = solve($a0, $a1,$a2, $b0,$b1, $b2); echo implode(" ",$result)."\n";
?>

## One Reply to “PHP: Compare the Triplets Algorithms”

1. Jai Dixit says:

I am doing it the following way but I am still getting incorrect output for some reason. Could you please advice?

// Complete the compareTriplets function below.
function compareTriplets($a,$b) {

$totalA = 0;$totalB = 0;
$score = []; array_push($score,$totalA,$totalB);

//case 1

if($a[0]>$b[0]){
echo $totalA += 1; }elseif($a[0]$b[1]){ echo$totalA += 1;
}elseif($a[1]$b[2]){
echo $totalA += 1; }elseif($a[2]<$b[2]){ echo$totalB += 1;
}else {
echo $totalA += 0; echo$totalB += 0;
}

return \$score;

}