使用java求高精度除法，要求保留N位小数

 1 import java.math.BigDecimal;
 2 import java.util.Scanner;
 3 
 4 public class BD
 5 {
 6     public static void main(String[] args) 
 7     {
 8         Scanner scanner = new Scanner(System.in);
 9         while(scanner.hasNext())
10         {
11             BigDecimal a = scanner.nextBigDecimal();
12             BigDecimal b = scanner.nextBigDecimal();
13             int n = scanner.nextInt();
14             System.out.println(a.divide(b, n, BigDecimal.ROUND_HALF_UP).toString().replaceFirst("^0*", ""));
15         }
16     }
17 }