java大数除法_Java 大数运算

import java.util.*;

import java.math.*;

public class Main{

public static void main(String args[]){

Scanner cin = new Scanner(System.in);

BigInteger a, b;

//以文件EOF结束

while (cin.hasNext()){

a = cin.nextBigInteger();

b = cin.nextBigInteger();

System.out.println(a.add(b)); //大整数加法

System.out.println(a.subtract(b)); //大整数减法

System.out.println(a.multiply(b)); //大整数乘法

System.out.println(a.divide(b)); //大整数除法(取整)

System.out.println(a.remainder(b)); //大整数取模

//大整数的比较

if( a.compareTo(b) == 0 ) System.out.println("a == b"); //大整数a==b

else if( a.compareTo(b) > 0 ) System.out.println("a > b"); //大整数a>b

else if( a.compareTo(b) < 0 ) System.out.println("a < b"); //大整数a

//大整数绝对值

System.out.println(a.abs()); //大整数a的绝对值

//大整数的幂

int exponent=10;

System.out.println(a.pow(exponent)); //大整数a的exponent次幂

//返回大整数十进制的字符串表示

System.out.println(a.toString());

//返回大整数p进制的字符串表示

int p=8;

System.out.println(a.toString(p));

}

}

}