哈哈，问题答案验证应该是开发一点的，有点死板哈~
public class HelloWorld {
static String clsssNum = "2班";
static double avSum = 0;
static int[] cols = {67,78,98,56,88,34,89};
public static int avScore(){
for(int i=0; i<HelloWorld.cols.length; i++){
HelloWorld.avSum += HelloWorld.cols[i];
}
return (int)HelloWorld.avSum/HelloWorld.cols.length;
}
public static void main(String[] args){
HelloWorld test = new HelloWorld();
System.out.println(HelloWorld.clsssNum+"学生的平均成绩是"+test.avScore());
}
}
