Just PHP FUN 131.

just_php_fun_131.md

Just PHP FUN 131.

• https://www.codewars.com/kata/596f28fd9be8ebe6ec0000c1 Wave Sorting.

Started at 22:24 17.10.2020 Satruday Oct.
Finished at 22:57 17.10.2020 Saturday Oct. (0hrs 23minutes)

wave_sort.php

<?php
# https://www.codewars.com/kata/596f28fd9be8ebe6ec0000c1 Wave Sorting.
function wave_sort(&$array){
  $answer = []; $size = count($array);
  sort($array);
  for($i = 0; $i < $size; $i += 1){
    if(0 == $i%2) {
      array_push($answer,array_pop($array));
      }
    else {
      array_push($answer, array_shift($array));
      }
  }
  $x = draw($answer);
  echo "$x \n";
  array_push($array,...$answer);
  return $array;
}
function draw($a){
  $ans = "";
  foreach($a as $k => $v){
    $ans .= $v;
    if(0 == $k%2) $ans .= ">=";
    else $ans .= "<=";
  }
  return $ans;
}