摘要:
这两个类都在java.math.*包中,因此每次必须在开头处引用该包。Ⅰ基本函数:1.valueOf(parament);将参数转换为制定的类型比如int a=3;BigInteger b=BigInteger.valueOf(a);则b=3;String s=”12345”;BigInteger c=BigInteger.valueOf(s);则c=12345;2.add();大整数相加BigInteger a=new BigInteger(“23”);BigInteger b=new BigInteger(“34”);a.add(b);3.subtract();相减4.multiply() 阅读全文
摘要:
模板:大素数判断 java2010-06-03 22:22import java.io.*;import java.util.*;import java.math.*;public class Main {static Scanner in;static PrintWriter out;public static void main(String[] args) throws Exception {in = new Scanner(System.in);out = new PrintWriter(System.out);int number;number = in.nextInt();int 阅读全文