Java BigInteger Usage Guide

First last written yesterday, the fast power of the broken:

(Note: The class name of the public class is main when hdu the problem)

1 ImportJava.util.*;2 Importjava.math.*;3 4  Public classmain{5      Public Static voidMain (string[] args)6     {7 BigInteger a,c,aa,cc;8         intB,d,ans;9Scanner in=NewScanner (system.in);Ten          while(In.hasnext ()) One         { AAa=NewBigInteger ("1"); -Cc=NewBigInteger ("1"); -A=In.nextbiginteger (); theb=in.nextint (); -C=In.nextbiginteger (); -D=in.nextint (); -             if((A.compareto (c) ==1) && (b>d)) +Ans=1; -             Else if((A.compareto (c) ==-1) && (b<d)) +Ans=-1; A             Else at             { -                  while(b>0) -                 { -                     if(b%2!=0) -Aa=aa.multiply (a); -B=b/2; inA=a.multiply (a); -                 } to                  while(d>0) +                 { -                     if(d%2!=0) theCc=cc.multiply (c); *D=d/2; $C=c.multiply (c);Panax Notoginseng                 } -                  the                 //System.out.println (aa+ "" +cc); +ans=Aa.compareto (cc); A             } the             if(ans==0) +System.out.println ("="); -             Else if(Ans==-1) $System.out.println ("<");//AA<CC $             Else if(ans==1) -System.out.println (">");//AA>CC -         } the     } -}

Common methods of the BigInteger class:

add:+ subtract:-multiply:* divide:/remainder:% (MoD)

A.pow (b): A^b ABS: Absolute

CompareTo: Compare Size

Min, Max: Take the most value

VALUEOF: Assign an initial value (or use the newbiginteger above)

Reference:

Http://www.cppblog.com/aswmtjdsj/archive/2011/08/20/153973.aspx

Java BigInteger Usage Guide