Just PHP FUN 083.

insert_nth.php

<?php
# https://www.codewars.com/kata/55cacc3039607536c6000081 Linked Lists - Insert Nth Node.
function insert_nth($head, $index, $data) {
  if(!$head) return new Node($data);
  if(0 == $index) return new Node($data,$head);
  $prv = null; $nxt = $head; $input = new Node($data);
  for($i = 0; $i < $index && $nxt; $i += 1){
    $prv = $nxt; $nxt = $nxt->next;
  }
  if($i != $index) throw new InvalidArgumentException('Division by zero.');
  $prv->next = $input;
  $input->next = $nxt;
  return $head;
}

just_php_fun_083.md

Just PHP FUN 083.

• https://www.codewars.com/kata/55cacc3039607536c6000081 Linked Lists - Insert Nth Node.

Started at 22:45 22.08.2020 Aug Saturday.
Finished at 22.08.2020 23:13 Aug Saturday. (0hrs 28minutes)