java大数。

代码：

import java.util.Scanner;
import java.math.*;
public class Main{
	public static void main(String[] args){
		Scanner cin = new Scanner(System.in);
		BigInteger a, b;
		BigInteger t = BigInteger.valueOf(0);
		a = cin.nextBigInteger();
		b = cin.nextBigInteger();
		while(!(a.equals(t)&&b.equals(t))){
			if(a.equals(b)){
				System.out.println("a==b");
			}
			else if(a.compareTo(b)>0){
				System.out.println("a>b");
			}
			else System.out.println("a<b");
			a = cin.nextBigInteger();
			b = cin.nextBigInteger();
		}
	}
}        

nyoj 73 比大小 【java大数】