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用java所有测试数据都过了,怎么还有runtime error啊~~求助!!!这是代码:不甚感激!
import java.math.*;
import java.util.*;
public class Main {
public static void main(String arg[]){
String s;
BigDecimal a,c;
int i,n;
c=BigDecimal.valueOf(0);
Scanner in=new Scanner(System.in);
while(true){
a=in.nextBigDecimal();
n=in.nextInt();
c=a.pow(n);
s=c.toPlainString();
for(i=s.length()-1;i>=0;i--)
if(s.charAt(i)!='0')break;
s=s.substring(0,i+1);
if(s.charAt(0)=='0')s=s.substring(1,s.length());
System.out.println(s);
}
}
}
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