Just PHP FUN 009.

balancedNum.php

<?php
# https://www.codewars.com/kata/5a4e3782880385ba68000018 Balanced Number (Special Numbers Series #1 ).
function balancedNum($num) {
  $len = strlen($num);
  if(3 > $len) return "Balanced";
  $mid = floor(($len-1)/2);
  $add = 0 == $len%2 ? 2 : 1;
  echo "Input: $num , mid = $mid \n";
  $arr = str_split($num);
  $left = array_sum(array_slice($arr,0,$mid));
  $right = array_sum(array_slice($arr,$mid+$add));
  $left_str = implode(array_slice($arr,0,$mid));
  $right_str = implode(array_slice($arr,$mid+$add));
  echo "$num sum($left_str):$left == sum($right_str):$right \n";
  if($left == $right) {
    echo "Balanced \n";
    return "Balanced";
    }
  echo "Not Balanced \n";
  return "Not Balanced";
}

jumpingNumber.php

<?php
# https://www.codewars.com/kata/5a54e796b3bfa8932c0000ed Jumping Number (Special Numbers Series #4).
function jumpingNumber($n) {
  $a = str_split($n);
  for($i=1; $i < count($a); $i++){
    if(1 != abs($a[$i] - $a[$i-1])) return "Not!!";
  }
  return "Jumping!!";
}

just_php_fun_009.md

Just PHP FUN 009.

• https://www.codewars.com/kata/5949481f86420f59480000e7 Odd or Even?
• https://www.codewars.com/kata/5a03b3f6a1c9040084001765 Sum of angles.
• https://www.codewars.com/kata/5a4e3782880385ba68000018 Balanced Number (Special Numbers Series #1 ).
• https://www.codewars.com/kata/5a54e796b3bfa8932c0000ed Jumping Number (Special Numbers Series #4).
• https://www.codewars.com/kata/5a4d303f880385399b000001 STRONGN Strong Number (Special Numbers Series #2).

Starting at 28.05.2020 13:05 Thursday May.
Finished at 28.05.2020 21:36 Thursday May. (8hrs 31minutes)

odd_or_even.php

<?php
# https://www.codewars.com/kata/5949481f86420f59480000e7 Odd or Even?
function odd_or_even(array $a): string {
  if(empty($a)) $a = [0];
  return 0 == array_sum($a)%2 ? "even" : "odd";
}

strong.php

<?php
# https://www.codewars.com/kata/5a4d303f880385399b000001 STRONGN Strong Number (Special Numbers Series #2).
function strong($n) {
  $fact = function ($x){
    if(0 == $x) return 1;
    return array_product(range(1,$x));
  };
  $sum = 0;
  $a = str_split(strval($n));
  foreach($a as $v){
    $sum += $fact($v);
    if($n < $sum) return "Not Strong !!";
  }
  if ($sum != $n) return "Not Strong !!";
  return "STRONG!!!!";
}

sum_of_angles.php

<?php
# https://www.codewars.com/kata/5a03b3f6a1c9040084001765 Sum of angles.
function angle(int $n): int {
  return ($n - 2) * 180;
}