题解 | 判断质数
判断质数
https://www.nowcoder.com/practice/b936f737e2b34b3199a7c875446edd06
Number.prototype._isPrime = function (){
if (this < 2 || Math.floor(this) !== this.valueOf()) return false
for (let i = 2; i < this; i++) {
if (this % i === 0) return false
}
return true
}
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