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  1. <?php
  2.  
  3. $x = Array('a','b','c','d','e');
  4. $y = Array();
  5. $c = count($x);
  6. foreach($x as $i=>$a){
  7.     for($s = 0; $s < $c-$i; $s++){
  8.         $y[] = $a;
  9.     } 
  10. }
  11. $b = Array('a'=>0,'b'=>0,'c'=>0,'d'=>0,'e'=>0);
  12. $k=100000;
  13. for($u = 0; $u < $k; $u++){
  14.     $r = array_rand($y);
  15.     $n = $y[$r];
  16.  
  17.     $b[$n]++;
  18. }
  19. foreach($b as &$u) $u=$u/($k/count($y));
  20. ksort($b);
  21. print_r($b);
Success #stdin #stdout 0.13s 52480KB
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stdin
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Standard input is empty
stdout
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Array
(
    [a] => 4.9809
    [b] => 4.0047
    [c] => 3.03
    [d] => 2.0112
    [e] => 0.9732
)
https://ideone.com/lG2NGN
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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