Java BigInteger類

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 1 package demo04; 2  3 import java.math.BigInteger; 4  5 //超過long型的整數, 封裝成BigInteger類型的對象 6 public class BigIntegerDemo { 7     public static void main(String[] args) { 8         //構造方法 9         BigInteger b = new BigInteger("11111111111111111111111111111111111111111111");10         System.out.println(b);11         12         BigInteger b1 = new BigInteger("111111111111111111111111");13         BigInteger b2 = new BigInteger("222222222222222222222222");14         15         //加16         BigInteger bigadd = b1.add(b2);17         System.out.println(bigadd);18         19         //減20         BigInteger bigsub = b2.subtract(b1);21         System.out.println(bigsub);22         23         //乘24         BigInteger bigmul = b1.multiply(b2);25         System.out.println(bigmul);26         27         //除28         BigInteger bigdiv = b2.divide(b1);29         System.out.println(bigdiv);30         31     }32 }

 

Java BigInteger類

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