Lesson 2 – Counting Elements – FrogRiverOne (a small frog wants to get to the other side of a river) 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: //codility.com/demo/take-sample-test/frog_river_one
Solution in php:
function solution($X, $A) {
$tiles = array();
for ($i = 0; $i < count($A); $i++){
$j = $A[$i] - 1;
if (!isset($tiles[$j])){
$X--;
$tiles[$j] = true;
}
if (!$X){
return $i;
}
}
return -1;
}
Given “AS IS”, can be ported from other languages from solutions found on the internet, please use with care.
Please note: we think that codility.com does not give a correct assessment of your real-world programming skills. For instance, reading the below would bring more understanding why: //codility-test-questions.blogspot.com/2013/01/my-experience-with-codility-test.html
