求解，请问java该如何开根号？

Question

java该如何开根号？

Answer 1

java实现开根号的运算：public static void main(String[] args) { long start = System.currentTimeMillis(); doubletarget=9876543212345d; double result =sqrt(target);System.out.println("sqrt耗时："+(System.currentTimeMillis()-start)+",result:"+result);start=System.currentTimeMillis();result =SqrtByBisection(target, 0);System.out.println("SqrtByBisection耗时："+(System.currentTimeMillis()start)+",result:"+result);start=System.currentTimeMillis();result = SqrtByNewton(target, 0);System.out.println("SqrtByNewton耗时："+(System.currentTimeMillis()start)+",result:"+result);}