Just PHP FUN 007.

just_php_fun_007.md

Just PHP FUN 007.

• https://www.codewars.com/kata/5af15a37de4c7f223e00012d Sort Out The Men From Boys.
• https://www.codewars.com/kata/5ae7e3f068e6445bc8000046 See You Next Happy Year. count_chars
• https://www.codewars.com/kata/5ac6932b2f317b96980000ca Form The Minimum.
• https://www.codewars.com/kata/5aa1bcda373c2eb596000112 Maximum Triplet Sum (Array Series #7).
• https://www.codewars.com/kata/5abd66a5ccfd1130b30000a9 Row Weights. array_sum(array_filter($arr, function ($v){ return !($v%2); }, ARRAY_FILTER_USE_KEY));

Started at 26.05.2020 21:12 Tuesday May.
Finished at 26.05.2020 22:22 Tuesday May. (1hr 10 minutes).

maxTriSum.php

<?php
# https://www.codewars.com/kata/5aa1bcda373c2eb596000112 Maximum Triplet Sum (Array Series #7).
function maxTriSum($nums) {
  sort($nums);
  return array_sum(array_slice(array_unique($nums),-3));
}

menFromBoys.php

<?php
# https://www.codewars.com/kata/5af15a37de4c7f223e00012d Sort Out The Men From Boys.
function menFromBoys($arr) {
  $man = array_filter($arr, function($x){ return 0 == abs($x)%2;});
  sort($man);
  $boys = array_filter($arr, function($x){ return 1 == abs($x)%2;});
  rsort($boys);
  $answer = array_unique(array_merge($man, $boys));
  return array_values($answer);
}

minValue.php

<?php
# https://www.codewars.com/kata/5ac6932b2f317b96980000ca Form The Minimum.
function minValue($arr) {
  sort($arr);
  return intval(implode(array_unique($arr)));
}

nextyear.php

<?php
# https://www.codewars.com/kata/5ae7e3f068e6445bc8000046 See You Next Happy Year. `count_chars`
function nextHappyYear($year) {
   $year += 1;
   $separate = function($x){
      $x = str_split(strval($x));
      $new_size = count(array_unique($x));
      return 4 == $new_size;
   };
   while(!$separate($year)) $year += 1;
   return $year;
}

rowWeights.php

<?php
# https://www.codewars.com/kata/5abd66a5ccfd1130b30000a9 Row Weights.
function rowWeights($arr) {
  $one = 0; $two = 0;
  foreach( $arr as $i=>$x){
    if(0 == $i%2){ $one += $x; }
    else { $two += $x;}
  }
  return [$one, $two];
}