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package string;

/**

* 测试BigInteger

*/

import java.math.BigInteger;

public class TestBigInteger {

public static void main(String[] args) {

System.out.println(big(BigInteger.valueOf(100)));

}

/**

* 计算从1到b的阶乘

* �ӣ�o.add(Object o1) <br>

* ����o.subtract(Object o1) <br>

* �ˣ�o.multiply(Object o1) <br>

* ����o.divide(Object o1)

*/

private static BigInteger big(BigInteger b) {

if (b.equals(BigInteger.valueOf(1L))) {

return BigInteger.valueOf(1L);

} else {

return (b.multiply(big(b.subtract(BigInteger.valueOf(1L)))));

}

}

}