Created
March 11, 2019 01:45
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The Sieve of Eratosthenes in Javascript
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| function erato(n){ | |
| let map = new Map((new Array(n-1).fill(1)).map((n,i)=>[i+2,true])); | |
| for (let i = 2; i <= Math.sqrt(n);i++){ | |
| if (!map.get(i)) continue | |
| for (let j = i*2; j <= n; j += i) map.set(j,false) | |
| } | |
| return Array.from(map).filter(([n,b])=>b).map(([n])=>n); | |
| } | |
| console.log(erato(100)) |
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