hqd_acm的专栏

<br /> JAVA大数处理(BigInteger,BigDecimal)<br /><br />     在用C或者C++处理大数时感觉非常麻烦，但是在JAVA中有两个类BigInteger和BigDecimal分别表示大整数类和大浮点数类，至于两个类的对象能表示最大范围不清楚，理论上能够表示无线大的数，只要计算机内存足够大。<br />这两个类都在java.math.*包中，因此每次必须在开头处引用该包。<br /> <br />Ⅰ基本函数：<br />1.valueOf(parament);将参数转

<br /><br /> <br /> 大菲波数Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)<br />Total Submission(s): 3026    Accepted Submission(s): 884<br /><br /><br />Problem DescriptionFibonacci数列，定义如下：<br />f(1)=f(2)=1<br />f(n)=f(n-1

<br />1920: JojerResultTIME LimitMEMORY LimitRun TimesAC TimesJUDGE3s8192K707223Standard<br />Mr Jojer is a teacher, and he is crazy in programming, he wants the computer to do every thing for him, one day, one of his colleague Mr NEtiger asks him to w

【转】 Java大数的一些整理体会<br />大数的两个库BigInteger，BigDecimal。分别是大整数和大实数（具体有多大不详）。<br />操作：<br />1．  包含：import java.math.*;<br />2．  申请：<br />单个元素：BigInteger a, b; BigDecimal a, b;<br />数组：<br />BigInteger a[];<br />a = new BigInteger[1024];<br />BigDecimal a[];<br /

<br />TilingTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 5487 Accepted: 2676<br />DescriptionIn how many ways can you tile a 2xn rectangle by 2x1 or 2x2 tiles? <br />Here is a sample tiling of a 2x17 rectangle. <br /><br />InputInput is a se