Just PHP FUN 031.

count_red_beads.php

<?php
# https://www.codewars.com/kata/58712dfa5c538b6fc7000569 Simple beads count.
function count_red_beads(int $n): int {
  $ans = ($n-1)*2;
  
  return $ans >= 0 ? $ans : 0;
  
}

diagonal.php

<?php
# https://www.codewars.com/kata/5a8c1b06fd5777d4c00000dd Principal Diagonal | VS | Secondary Diagonal.
function diagonal($matrix){
 $s = count($matrix);
 $pd = 0;
 for($i = 0; $i  < $s; $i +=1 ) $pd += $matrix[$i][$i];
 $sd = 0;
 for($i = 0; $i  < $s; $i +=1 ) $sd += $matrix[$i][$s - 1 - $i];
 if($pd == $sd) return 'Draw!';
 if($pd > $sd) return 'Principal Diagonal win!';
 return "Secondary Diagonal win!";
}

freq_seq.php

<?php
# https://www.codewars.com/kata/585a033e3a36cdc50a00011c Frequency sequence.
function freq_seq(string $s, string $sep): string {
  $x = str_split($s);
  $h = count_chars($s,1);
  return implode($sep,array_map(function($v) use ($h){ return $h[ord($v)];},$x));
}

just_php_fun_031.md

Just PHP FUN 031.

• https://www.codewars.com/kata/585a1a227cb58d8d740001c3 Thinkful - String Drills: Repeater.
• https://www.codewars.com/kata/5c784110bfe2ef660cb90369 Ranking position.
• https://www.codewars.com/kata/585a033e3a36cdc50a00011c Frequency sequence.
• https://www.codewars.com/kata/58712dfa5c538b6fc7000569 Simple beads count.
• https://www.codewars.com/kata/5a8c1b06fd5777d4c00000dd Principal Diagonal | VS | Secondary Diagonal.

Started at 23.06.2020 15:59 Tuesday.
Finised at 23.06.2020 17:05 Tuesday. (1hr 6minutes)

ranking.php

<?php
# https://www.codewars.com/kata/5c784110bfe2ef660cb90369 Ranking position.
function ranking($people) {
  if(empty($people)) return [];
  $cmp = function($a,$b){ 
    if($a['points'] == $b['points']) return  $a['name'] <=> $b['name']; 
    return $b['points'] <=> $a['points'];
  };
  usort($people,$cmp);
  $people[0]["position"] = 1;
  for($i = 1; $i < count($people); $i += 1){
    if($people[$i-1]["points"] == $people[$i]["points"]){
      $people[$i]["position"] = $people[$i-1]["position"];
    }else{
      $people[$i]["position"] = $i + 1;
    }
  }
  return $people;
}

repeater.php

<?php
# https://www.codewars.com/kata/585a1a227cb58d8d740001c3 Thinkful - String Drills: Repeater.
use function str_repeat as solution;

# ------------------------------------------------------------------------------------------
function solution($s, $n) {
  return str_repeat($s,$n);
}