Just PHP FUN 038.

is_smooth.php

<?php
# https://www.codewars.com/kata/5886d35d4703f125a6000008 Simple Fun #22: Is Smooth?
function is_smooth(array $arr): bool {
  $s = count($arr); $li = $s - 1; $md = floor($s/2);
  if(1 == $s%2) return $arr[0] == $arr[$li] && $arr[0] == $arr[$md];
  $sm = $arr[$md] + $arr[$md-1];
  return $arr[0] == $arr[$li] && $arr[0] == $sm;
}

just_php_fun_038.md

Just PHP FUN 038.

• https://www.codewars.com/kata/557af4c6169ac832300000ba Help the Fruit Guy.
• https://www.codewars.com/kata/5a995c2aba1bb57f660001fd Scrolling Text.
• https://www.codewars.com/kata/5adadcb36edb07df5600092e Count up the points for the 7 Wonders board game! Easy version.
• https://www.codewars.com/kata/5886d35d4703f125a6000008 Simple Fun #22: Is Smooth?
• https://www.codewars.com/kata/57ebdf944cde58f973000405 Reverse Letters in Sentence.

Started at 17:16 01.07.2020 July Wednesday.
Finished at 21:00 01.07.2020 July Wednesday. (2hrs 44 minutes)

removeRotten.php

<?php
# https://www.codewars.com/kata/557af4c6169ac832300000ba Help the Fruit Guy.
function removeRotten($fruitBasket) {
  if(!$fruitBasket || empty($fruitBasket)) return [];
  return array_map(function($x){ return preg_replace('/rotten/','',strtolower($x));},$fruitBasket);
}

reverser.php

<?php
#  https://www.codewars.com/kata/57ebdf944cde58f973000405 Reverse Letters in Sentence.
function reverser(string $sentence): string {
   return preg_replace_callback('/\S+/',function($arr){
    return strrev($arr[0]);}, $sentence);
}

scrollingText.php

<?php
# https://www.codewars.com/kata/5a995c2aba1bb57f660001fd Scrolling Text.
function scrollingText($text) {
  $s = strlen($text); $txt = strtoupper($text); $ans = [];
  for($i = 0; $i < $s; $i += 1){
    array_push($ans,$txt); $txt = substr($txt,1).substr($txt,0,1);
  }
  return $ans;
}

sevenWondersScience.php

<?php
# https://www.codewars.com/kata/5adadcb36edb07df5600092e Count up the points for the 7 Wonders board game! Easy version.

// Calculate how many points you would make in 7 Wonders from these science cards!
function sevenWondersScience(...$x){
  // Do the code here
  echo "Input :".implode(",",$x)." \n";
  $a = array_sum(array_map(function($x){ return $x*$x;},$x));
  $b = 0;
  if(has_0($x)) {$b = 0; }
  else { $b = min($x) * 7; }
  echo "a = $a and b = $b, b/7 =".($b/7)." \n";
  return $b + $a;
}
function has_0($x){ return array_search(0,$x) === false ? false : true; }

Input :0,0,1
a = 1 and b = 7, b/7 =1

Welcome to the REpeat:5,4,5
Min and max 4 and 5
a = 66 and b = 14, b/7 =2