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
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(" ", $result)."\n";
?>
Feel free to add your comments.
I am doing it the following way but I am still getting incorrect output for some reason. Could you please advice?
// Complete the compareTriplets function below.
function compareTriplets($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;
}