Just PHP FUN 046.

drink_water.php

<?php
#  https://www.codewars.com/kata/57ab3d89bb9944b733000a32 T.T.T.28: Crow drink water(乌鸦喝水).
function drink_water($bottle_height, $bottle_radius, $water_height, $crow_mouth, $little_stones) {
  $x = $bottle_height - $crow_mouth -  $water_height;
  echo "$x \n";
  $btl = 3.14 * ($bottle_radius**2) * $bottle_height;
  $nose = 3.14 * ($bottle_radius**2) * $crow_mouth;
  $wtr = 3.14 * ($bottle_radius**2) *  $water_height;
  echo "$btl $nose $wtr \n";
  $v = $x * 3.14159265359 * ($bottle_radius**2);
  $ans = [];
  while($v > 0 && !empty($little_stones) ) {
    $x = array_shift($little_stones);
    $v -= $x;
    array_push($ans, $x);
    
  }
  #var_dump($little_stones);
  echo "$v \n";
  if($v <= 0) return $ans;
  return "The crow is dead.";
}

filter_lucky.php

<?php
# https://www.codewars.com/kata/580435ab150cca22650001fb Find the lucky numbers.
function filter_lucky(array $a): array {
  return array_values(array_filter($a,function($x){ return preg_match('/7/',$x);}));
}

findDeletedNumber.php

<?php
# https://www.codewars.com/kata/595aa94353e43a8746000120 Lost number in number sequence.
function findDeletedNumber(array $arr, array $mixedArr): int {
  return array_values(array_diff($arr, $mixedArr))[0] ?? 0;
}

just_php_fun_046.md

Just PHP FUN 046.

• https://www.codewars.com/kata/57fafb6d2b5314c839000195 Exclamation marks series #7: Remove words from the sentence if it contains one exclamation mark.
• https://www.codewars.com/kata/57faf32df815ebd49e000117 Exclamation marks series #5: Remove all exclamation marks from the end of words.
• https://www.codewars.com/kata/595aa94353e43a8746000120 Lost number in number sequence.
• https://www.codewars.com/kata/580435ab150cca22650001fb Find the lucky numbers.
• https://www.codewars.com/kata/57ab3d89bb9944b733000a32 T.T.T.28: Crow drink water(乌鸦喝水).

Started at 21:27 10.07.2020 Friday July.
Finished at 23:45 10.07.2020 (2hrs 18minutes)

remove.php

<?php
# https://www.codewars.com/kata/57fafb6d2b5314c839000195 Exclamation marks series #7: Remove words from the sentence if it contains one exclamation mark.
function remove(string $s): string {
  $x = explode(" ",$s);
  $x = array_filter($x,function($x){ 
    return 1 != substr_count($x,'!');});
  $x = implode(" ",$x);
  return $x;
}

remove_exclamation.php

<?php
# https://www.codewars.com/kata/57faf32df815ebd49e000117 
# Exclamation marks series #5: Remove all exclamation marks from the end of words. 
function remove(string $s): string {
  return implode(" ",array_map(function($x){ return rtrim($x,"! ");},explode(" ",$s)));
}