Just PHP FUN 135.

expanded_form.php

<?php
# https://www.codewars.com/kata/5842df8ccbd22792a4000245 Write Number in Expanded Form.
function expanded_form(int $n): string {
  $ans = []; $power = 0;
  while($n > 10){
    $x = $n % 10;
    array_unshift($ans,[$x,$power]);
    $power += 1;
    $n = intval(substr(sprintf('%d',$n),0,-1));
  }
  array_unshift($ans, [$n,$power]);
  $ans = array_filter($ans,fn($x)=>$x[0] == 0 ? false : true);
  
  return imploder($ans);
}

function imploder($arr){
  $answer = "";
  foreach($arr as $pair) $answer .= " + ".strval($pair[0]) . str_repeat("0",$pair[1]); 
  
  return trim($answer, " +");
}

just_php_fun_135.md

Just PHP FUN 135.

• https://www.codewars.com/kata/5842df8ccbd22792a4000245 Write Number in Expanded Form.

Started at 22:58 22.10.2020 Thursday Oct.
Finished at 23:23 22.10.2020 Thursday Oct. (0hs 25minutes)