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  1. <?php
  2.  
  3. function shift_calc($x, $y) {
  4.     return $x != '0' ? $x : $y;
  5. };
  6.  
  7. function shift_sum($am, $pm) {
  8.     return implode(array_map('shift_calc', str_split($am), str_split($pm)));
  9. };
  10.  
  11. $result = shift_sum('A00A00A', '0P000P0');
  12.  
  13. var_dump($result);
Success #stdin #stdout 0.02s 13112KB
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stdin
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Standard input is empty
stdout
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string(7) "AP0A0PA"
https://ideone.com/NbTEJ
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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