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<b
//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));
}
}
}
Java 大数运算
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