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  1. function counter (surnames) {  
  2.   var count = {};
  3.   surnames.split(',').forEach(function(s) {
  4.      count[s] ? count[s]++ : count[s] = 1;
  5.   });
  6.   return count;
  7. }
  8.  
  9. print(counter("ala,ma,kota,ala").toSource());
Success #stdin #stdout 0.01s 30320KB
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Standard input is empty
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({ala:2, ma:1, kota:1})
https://ideone.com/kXQKzL
language:
JavaScript (SMonkey 60.2.3)
created:
7 years ago
visibility:
secret

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