CountFactors Demo Task at Codility.com

Codility.com Tests 100/100 Solutions

Lesson 8 –  Prime and composite numbers – CountFactors demo task solution code written in php. Gives 100/100 score at the time of publishing.

The description of the problem is copyrighted, so please see the following link for it: https://codility.com/demo/take-sample-test/count_factors

Solution in php:

function solution($N) {
    $result = 0;
    $sqrtN  = intval(sqrt($N));
    $i      = 1;
    while($i <= $sqrtN){
        if($N % $i == 0){
            $result += 2;
        }
        $i++;
    }
    if($sqrtN * $sqrtN == $N){
        $result--;
    }
    return $result;
}

Given “AS IS”, can be ported from other languages from solutions found on the internet, please use with care.

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