JAVA [BigInteger]
* java.math.BigInteger
* 不可变的任意精度的整数
*/
public static void BigIntegerTest(){
System.out.println(BigInteger.class);
System.out.println(BigInteger.ONE);
System.out.println(BigInteger.TEN);
System.out.println(BigInteger.ZERO);
//初始化
System.out.println("01100001 01100010");
System.out.println(new BigInteger(new byte[]{'a','b'}));
//最高有效字节在第零个元素中
System.out.println(new BigInteger(-1,new byte[]{'a','b'}));
System.out.println(new BigInteger(1,new byte[]{'a','b'}));
BigInteger bi = new BigInteger("-24930");
System.out.println(bi);
System.out.println(bi.bitCount());
System.out.println(bi.bitLength());
System.out.println(bi.toString());
//返回一个 byte 数组，该数组包含此 BigInteger 的二进制补码表示形式
System.out.println(bi.toByteArray());
//返回此 BigInteger 的给定基数的字符串表示形式
System.out.println(bi.toString(16));
//返回此 BigInteger 的最小的二进制补码表示形式的位数，不包括 符号位。
System.out.println(bi.abs());
System.out.println(bi. and(new BigInteger("-23456")));
System.out.println(bi. andNot(new BigInteger("-23456")));
System.out.println(bi. xor(new BigInteger("-23456")));
System.out.println(bi. compareTo(new BigInteger("-23456")));
System.out.println(bi. not());
System.out.println(bi. or(new BigInteger("-23456")));
System.out.println(bi. negate());
System.out.println(bi. gcd(new BigInteger("8")));
System.out.println(bi. isProbablePrime(1));
//操作
System.out.println(bi. pow(2));
System.out.println(bi. add(new BigInteger("2345234")));
System.out.println(bi. subtract(new BigInteger("-23456")));
System.out.println(bi. multiply(new BigInteger("-23456")));
System.out.println(bi. divide(new BigInteger("46345")));
System.out.println(bi. remainder(new BigInteger("46345")));
//返回包含 (this / val) 后跟 (this % val) 的两个 BigInteger 的数组
System.out.println(bi. divideAndRemainder(new BigInteger("46345")));
//100!
bi = BigInteger. valueOf(1);
for(int i =1;i<1001;i++){
bi = bi.multiply(BigInteger. valueOf(i));
}
System.out.println(bi);
}
*************************************************************************************************************
class java.math.BigInteger
1
10
0
11000011100010
01100001 01100010
24930
-24930
24930
-24930
6
15
-24930
[B@15ff48b
-6162
24930
-31744
6814
15102
-1
24929
-16642
24930
2
false
621504900
2320304
-1474
584758080
0
-24930
[Ljava.math.BigInteger;@1e63e3d
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