Java-大数类

import java.math.*;
import java.io.*;
import java.math.*;
import java.util.Scanner;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Comparator;
import java.util.Iterator;
import java.util.Comparator; 
public class Zz {
	 
    public static void main(String[] args) {
        
    	//定义大数对象的两种方法
    	BigInteger who=new BigInteger ("122151521251515");
    	BigInteger whoo;   whoo=BigInteger.valueOf(154821525);
    	BigInteger []shuzu=new BigInteger [1000];
    	//大数类的基本操作
    	BigInteger a,b,c;
    	Scanner cin=new Scanner (System.in);
    	a=cin.nextBigInteger();
    	b=cin.nextBigInteger();
    	c=a.add(b);
    	System.out.println(c);
    	c=a.multiply(b);
    	System.out.println(c);
    	c=a.subtract(b);
    	System.out.println(c);
    	c=a.divide(b);
    	System.out.println(c);
    	c=a.max(b);
    	System.out.println(c);
    	c=a.min(b);
    	System.out.println(c);
    	c=a.mod(b);
    	System.out.println(c);
    	c=a.gcd(b);
    	System.out.println(c);
    	//平方取余（快速幂）
    	BigInteger mood;
    	mood=BigInteger.valueOf(10007);
    	c=a.modPow(b, mood);
    	System.out.println(c);
    	//进制转化,BigInteger aa=new BigInteger ("XXXXX",XX(进制数));
    	BigInteger aa=new BigInteger ("11110",2);
    	System.out.print(aa);
    	
    	
    }
  
}