小编noo*_*mer的帖子

有人可以解释++freq下面给出的程序中有什么用？

package array;

import java.util.Random;

public class CounterArray {
     public static void main(String[] args){
         Random Ran = new Random();
         int freq[] = new int [7];

         for(int roll=1;roll<100;roll++){
             ++freq[1+Ran.nextInt(6)];
         }
          System.out.println("face\tFrequency");
         for(int face=1;face<freq.length;face++){
             System.out.println(face+"\t"+freq[face]);
         }
     }
}