1、BigInteger类的概述和方法使用
* A:BigInteger的概述
* 可以让超过Integer范围内的数据进行运算
* B:构造方法
* public BigInteger(String val)
* C:成员方法
* public BigInteger add(BigInteger val)
* public BigInteger subtract(BigInteger val)
* public BigInteger multiply(BigInteger val)
* public BigInteger divide(BigInteger val)
* public BigInteger[] divideAndRemainder(BigInteger val)
例：
public class Demo4 {
public static void main(String[] args) {
BigInteger bi1 = new BigInteger("100");
BigInteger bi2 = new BigInteger("2");
System.out.println(bi1.add(bi2)); //+
System.out.println(bi1.subtract(bi2)); //-
System.out.println(bi1.multiply(bi2)); //*
System.out.println(bi1.divide(bi2)); ///(除)
BigInteger[] arr = bi1.divideAndRemainder(bi2); //取除数和余数
for (int i = 0; i < arr.length; i++) {
System.out.println(arr[i]);
}
}
}