text: Find all prime numbers
code: function addPrimes ( ) { let n = MAX ; let prime = new Array ( n + 1 ) . fill ( true ) ; for ( let p = 2 ; p * p <= n ; p ++ ) { if ( prime [ p ] == true ) { for ( let i = p * p ; i <= n ; i += p ) prime [ i ] = false ; } } let ans = [ ] ;