HDU中大數實現的題目，持續更新（JAVA實現）

標籤：

HDU1002：大數加法，PE了N次

import java.util.Scanner;import java.math.*;public class Main{    public static void main(String[] args)    {        Scanner cin = new Scanner(System.in);        int T;        T=cin.nextInt();        for(int z=1;z<=T;z++)        {            if(z!=1) System.out.println();            BigInteger a,b;            a=cin.nextBigInteger();            b=cin.nextBigInteger();            System.out.println("Case "+z+":");            System.out.println(a+" + "+b+" = "+a.add(b));                    }        cin.close();    }}

View Code

HDU1042:N!大數乘法

import java.util.Scanner;import java.math.*;import javax.naming.ldap.HasControls;public class Main{    public static void main(String[] args)    {        Scanner cin = new Scanner(System.in);        int t;        while(cin.hasNext())        {            BigInteger n=BigInteger.valueOf(1);            t=cin.nextInt();            for(int i=2;i<=t;i++)            {                n=n.multiply(BigInteger.valueOf(i));            }            System.out.println(n);        }            }        }

View Code

HDU1316：How Many Fibs?

import java.math.*;import java.util.Scanner;public class Main {    public static void main(String[] args)      {        Scanner cin = new Scanner(System.in);        BigInteger []f=new BigInteger[1020];        f[0]=BigInteger.valueOf(1);        f[1]=BigInteger.valueOf(1);        f[2]=BigInteger.valueOf(2);        for(int i=3;i<1019;i++)            f[i]=f[i-1].add(f[i-2]);        BigInteger a,b;        int sum;        while(cin.hasNextBigInteger())        {            a=cin.nextBigInteger();            b=cin.nextBigInteger();            if(a.compareTo(BigInteger.ZERO)==0&&b.compareTo(BigInteger.ZERO)==0) break;            sum=0;            for(int i=1;i<=1015;i++)            {               if(f[i].compareTo(a)>=0&&f[i].compareTo(b)<=0)               {                  sum++;               }               if(f[i].compareTo(b)>0) break;            }            System.out.println(sum);        }        cin.close();    }}

HDU1753: 大明 A+B 大數加法加一些函數

import java.math.*;import java.util.Scanner;public class Main {    public static void main(String[] args)      {        Scanner cin = new Scanner(System.in);        BigDecimal a,b;        while(cin.hasNextBigDecimal())        {            a=cin.nextBigDecimal();            b=cin.nextBigDecimal();            System.out.println(a.add(b).stripTrailingZeros().toPlainString());        }        cin.close();    }}

 

HDU中大數實現的題目，持續更新（JAVA實現）