Java-Python对垒之质数计算，,@目录Java 实现

@目录Java 实现Python 实现结论

Java 实现

class PrimeNumber{public static void main(String[] args) {long start=System.currentTimeMillis();int count=0;label:for(int i=1;i<=100000;i++){for (int j=2;j<=Math.sqrt(i);j++) {if(i%j==0){continue label; //返回外层循环}}count++;// System.out.println(i);}long end=System.currentTimeMillis();System.out.println("count"+count); //9593System.out.println("time(ms)"+(end-start)); //time 14ms}}

Python 实现

import timeimport mathdef main():start=time.time()count=0for i in range(1,100001):isFlag=Truefor j in range(int(math.sqrt(i)),1,-1):if i%j==0:isFlag=Falsebreakif (isFlag):count+=1end=time.time()print(‘count‘,count) //9593print(‘time(ms)‘,(end-start)*1000) //697.28684425354msif __name__ == ‘__main__‘:main()

结论

Java实现质数计算效率更高，循环处理方式更灵活，Python可读性高，各有各的特点。

Java-Python对垒之质数计算