Just PHP FUN 037.

bump.php

<?php
# https://www.codewars.com/kata/57ed30dde7728215300005fa Bumps in the Road.
function bump($x) {
  $x1 = count_chars($x);
  $z = $x1[ord('n')];
  $ans = $z <= 15 ? "Woohoo!" :  "Car Dead";
  echo "$x => $z : $ans\n";
  return $ans;
}

checkIfFlush.php

<?php
# https://www.codewars.com/kata/5acbc3b3481ebb23a400007d Determine if the poker hand is flush.
function checkIfFlush($cards)
{
  return 1 == count(array_unique(array_map(function($x){ return $x[strlen($x)-1];},$cards)));
}

cupAndBalls.php

<?php
# https://www.codewars.com/kata/5b715fd11db5ce5912000019 Ball and Cups.

function cupAndBalls($b, $arr) {
  $x = [0,0,0,0];
  $x[$b] = 1;
  foreach($arr as $v){
    list($p1,$p2) = $v;
    $tmp = $x[$p1];
    $x[$p1] = $x[$p2];
    $x[$p2] = $tmp;
  }
  return array_search(1,$x);
}

just_php_fun_037.md

Just PHP FUN 037.

• https://www.codewars.com/kata/5acbc3b3481ebb23a400007d Determine if the poker hand is flush.
• https://www.codewars.com/kata/5b096efeaf15bef812000010 nth Floyd line.
• https://www.codewars.com/kata/5b715fd11db5ce5912000019 Ball and Cups.
• https://www.codewars.com/kata/57ed30dde7728215300005fa Bumps in the Road.
• https://www.codewars.com/kata/5aff237c578a14752d0035ae Predict your age!

Started at 22:00 30.06.2020 Tuesday June.
Finished at 23:35 30.06.2020 Tuesday June.

nth_floyd.php

<?php
# https://www.codewars.com/kata/5b096efeaf15bef812000010 nth Floyd line.
function nth_floyd($n) : int {
  $l = 1; $h = 50000;
  while($l < $h){
   $mid = ($l + $h) >> 1;
   $midval = ((1+$mid)*$mid)/2;
   $prv = ((1+$mid-1)*($mid-1))/2;
   echo "$l <== $mid ==> $h \n [n: $n, midval: $midval]  \n"; 
   echo ($prv <= $n && $n <= $midval)." equal \n";
   if($prv < $n && $n <= $midval) {
     echo "Equal!; \n";
     return $mid;
    }
   if($n < $midval){ $h = $mid - 1;}
   else{ $l = $mid + 1;}
   
  }
  return $l;
}

predictAge.php

<?php
# https://www.codewars.com/kata/5aff237c578a14752d0035ae Predict your age!
function predictAge(...$x){
  $x = array_map(function($x){return $x*$x;},$x);
  $x = array_sum($x);
  return floor(sqrt($x)/2);
}