Java Large number

Transferred from: https://www.cnblogs.com/zufezzt/p/4794271.html

ImportJava.util.*;Importjava.math.*; Public classmain{ Public Static voidMain (String args[]) {Scanner cin=NewScanner (system.in);             BigInteger A, B; //End With EOF file        while(Cin.hasnext ()) {a=Cin.nextbiginteger (); b=Cin.nextbiginteger (); System.out.println (A.add (b)); //Large integer AdditionSystem.out.println (A.subtract (b));//Large integer SubtractionSystem.out.println (a.multiply (b));//Large integer MultiplicationSystem.out.println (A.divide (b));//Large integer division (rounding)System.out.println (A.remainder (b));//Large integer modulus//comparison of large integers           if(A.compareto (b) = = 0) System.out.println ("a = = B");//Large integer a==b           Else if(A.compareto (b) > 0) System.out.println ("a > B");//Large integer a>b           Else if(A.compareto (b) < 0) System.out.println ("a < B");//Large integer a<b//Large integer Absolute valueSystem.out.println (A.abs ());//the absolute value of a large integer//the power of large integers           intexponent=10; System.out.println (A.pow (exponent)); //exponent power of large integer a//returns a string representation of a large integer decimalSystem.out.println (a.tostring ()); //returns a string representation of a large integer p-binary           intP=8;       System.out.println (A.tostring (p)); }    }}

Turn from: 51884888

HDU 1002a+b Large number version

1 ImportJava.math.BigInteger;2 ImportJava.util.Scanner;3 4  Public classMain {5     voidsolve () {6 BigInteger A, B, C;7Scanner cin =NewScanner (system.in);8         intt =cin.nextint ();9          for(inti = 1; I <= t; i++) {TenSYSTEM.OUT.PRINTLN ("case" + i + ":"); OneA =Cin.nextbiginteger (); Ab =Cin.nextbiginteger (); -System.out.println (A + "+" + B + "=" +A.add (b)); -             if(I! =t) System.out.println (); the         } -     } -      Public Static voidMain (string[] args) { -Main work =NewMain (); + work.solve (); -     } +}

HDU 1042 factorial Large number version

1 ImportJava.math.BigInteger;2 ImportJava.util.Scanner;3 4  Public classMain {5     intMAXN = 10005;6     voidsolve () {7Scanner cin =NewScanner (system.in);8         intN;9          while(Cin.hasnext ()) {Tenn =cin.nextint (); OneBigInteger ans = biginteger.valueof (1); A              for(inti = 2; I <= N; i++) { -Ans =ans.multiply (biginteger.valueof (i)); -             } the System.out.println (ans); -         } -     } -      Public Static voidMain (string[] args) { +Main work =NewMain (); - work.solve (); +     } A}

HDU 1297F(N)=f (n? 1) + F (n 2) +f ( N? 4) f (N) =f (n?1) +f (n?2) +f (n?4)

Importjava.math.*;ImportJava.util.*; Public classMain {voidsolve () {Scanner cin=NewScanner (system.in); biginteger[] ans=Newbiginteger[1001]; ans[1] = biginteger.valueof (1); ans[2] = biginteger.valueof (2); ans[3] = biginteger.valueof (4); ans[4] = biginteger.valueof (7);  for(inti = 5; I <= 1000; i++) {Ans[i]= Ans[i-1].add (Ans[i-2].add (ans[i-4])); }         while(Cin.hasnext ()) {intn =Cin.nextint ();        System.out.println (Ans[n]); }    }     Public Static voidMain (string[] args) {main work=NewMain ();    Work.solve (); }}

HDU 1753 high-precision fractional a+b, to remove the end of the rear guide 0.

Importjava.math.*;ImportJava.util.*; Public classMain {voidsolve () {//BigInteger A, B, C;Scanner cin =NewScanner (system.in); BigDecimal a= bigdecimal.valueof (0); BigDecimal b= bigdecimal.valueof (0);  while(Cin.hasnext ()) {a=Cin.nextbigdecimal (); b=Cin.nextbigdecimal ();        System.out.println (A.add (b). Striptrailingzeros (). toplainstring ()); }    }     Public Static voidMain (string[] args) {main work=NewMain ();    Work.solve (); }}

Java Large number