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Apr 26th, 2018
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  1. start = System.currentTimeMillis();
  2.  
  3. numbers = 100..999;
  4. products=[];
  5. // Create all products
  6. for(i in numbers) {
  7. for(j in 100..i) {
  8. products<<i*j;
  9. }
  10. }
  11. println "finished computing products";
  12. // Now extract palindroms
  13. palindroms = products.findAll { n ->
  14. s = n.toString();
  15. s.equals(s.reverse());
  16. }
  17. end = System.currentTimeMillis();
  18. println "duration : "+(end-start)/1000.0+" s.";
  19. println palindroms.max();
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