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HDU1002：大数加法，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(); } }
HDU1042:N!大数乘法
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); } } }
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 大数加法加一些函数
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(); } }
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原文地址：http://www.cnblogs.com/zhangmingcheng/p/4338139.html
