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Jul 27th, 2020
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  1. // javascript
  2. const message = "Zl frperg zrffntr"
  3. duck
  4. function r13(s) {
  5. return (s ? s : this).split('').map(function(_)
  6. {
  7. if (!_.match(/[A-Za-z]/)) return _;
  8. c = Math.floor(_.charCodeAt(0) / 97);
  9. k = (_.toLowerCase().charCodeAt(0) - 83) % 26 || 26;
  10. return String.fromCharCode(k + ((c == 0) ? 64 : 96));
  11. }).join('');
  12. }
  13. console.log(r13(message))
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