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masterfermin02/frecuency functional.js

Created December 7, 2018 17:11
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frecuency functional.js
function frequency(array_elements){
return array_elements.sort().reduce((b,c)=>((b[b.findIndex(d=>d[0]===c)]||b[b.push([c,0])-1])[1]++,b),[]);
}
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