Problem 1007

Problem 1007
Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 7  Solved: 1
[Submit][Status][Web Board]
Description
题目描述更简单，直接看输入输出要求即可,数字位数不超过150位
Input
每组测试数组，输入一行两个数，a，b。 
Output
每组输出一个数为 a*b的结果 
Sample Input
1 3
1000000000000000000 2
1.5 3
0.5 3
3 0.5


Sample Output
3
2000000000000000000
4.5
1.5
1.5

标程：

import java.util.Scanner; 
import java.math.*; 
  
public class Main { 
  
    /** 
     * @param args the command line arguments 
     */
    public static void main(String[] args) { 
        Scanner in = new Scanner ( System.in ); 
        BigDecimal num,num2; 
          
        while ( in.hasNext() ){ 
            num = in.nextBigDecimal(); 
            num2 = in.nextBigDecimal(); 
            num = num.multiply(num2); 
            num = num.stripTrailingZeros(); 
            String out = num.toPlainString(); 
            //if ( out.charAt(0) == '0' ) 
                 //out = out.substring(1); 
            System.out.println( out ); 
        } 
    } 
}