Lesson 2 – Counting Elements – MaxCounters (max_counter) 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/max_counters
Solution in php:
function solution($N, $A){
$cond = $N + 1;
$cur_max = 0;
$last_upd = 0;
$cnt_arr = array();
$cnt = count($A);
for($i = 0; $i < $cnt; $i++){
$cur = $A[$i];
if($cur == $cond){
$last_upd = $cur_max;
}
else{
$pos = $cur - 1;
if(!isset($cnt_arr[$pos])){
$cnt_arr[$pos] = 0;
}
if($cnt_arr[$pos] < $last_upd){
$cnt_arr[$pos] = $last_upd + 1;
}
else{
$cnt_arr[$pos] ++;
}
if($cnt_arr[$pos] > $cur_max){
$cur_max = $cnt_arr[$pos];
}
}
}
for($i = 0; $i < $N; $i++){
if(!isset($cnt_arr[$i])){
$cnt_arr[$i] = 0;
}
if($cnt_arr[$i] < $last_upd){
$cnt_arr[$i] = $last_upd;
}
}
return $cnt_arr;
}
Given “AS IS”, can be ported from other languages from solutions found on the internet, please use with care.
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