重复加法怎么用java实现？答案如下

liang183

package nameyu;

import java.util.Scanner;

public class Test {

    /**

     * @param args

     */

    public static void main(String[] args) {

        // TODO Auto-generated method stub

         final int NUMBER_OF_ADDITION =10;//产生10道题

         int corretcount=0;

         int count=0;

         String output="";

         long startTime=System.currentTimeMillis();

         Scanner input=new Scanner(System.in);

         while(count<NUMBER_OF_ADDITION){

             int number1=(int)(Math.random()*16+1);

             int number2=(int)(Math.random()*16+1);

             System.out.print("what is "+number1+"+"+number2+"?");

             int answer=input.nextInt();

         if(number1+number2==answer){

             System.out.println("you are correct!");

             corretcount++;

         }else

             System.out.println("you answer is wrong.\n"+number1+"+"+number2+"should be"+(number1+number2));

            count++;

            output+="\n"+number1+"+"+number2+"="+answer+((number1+number2==answer)?"correct":"wrong");  

         }

        long endTime=System.currentTimeMillis();

        long testTime=endTime-startTime;

        System.out.println("Correct count is"+corretcount+"\nTest time is "+testTime/1000+" seconds\n"+output);

    }

}