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報錯是數組下標超過范圍但是我不知道怎么超了

public class HelloWorld {
??? public static void main(String[] args){
????? int num[]=new int[]{61,23,4,74,13,148,20};?
????? int B=num[0];
????? int S=num[0];
????? int sum=0;
????? double avg=0;
????? int i;
????? for(i=0;i<num.length;i++);{
??? ?? sum=sum+num[i];
?????????? if(B<=num[i]){
??? ?????? B=num[i];
????? }else if(S>=num[i]){
??? ?? S=num[i];
????? }
????? }
????? avg=sum/7;
????? System.out.println(B+S+sum+avg);
?????
?
??}
?
??? }哪里出問題了？？

慕粉3897032

2016-09-06

源自：Java入門第一季（IDEA工具）升級版 6-5

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3 回答

qie_wen
2016-09-16

public?class?Shuzu?{
	public?static?void?main(String[]?args){
	??????int?num[]=new?int[]{61,23,4,74,13,148,20};??
	??????int?B=num[0];
	??????int?S=num[0];
	??????int?sum=0;
	??????double?avg=0;
	??????int?i;
	??????for(i=0;i<num.length;i++){
	???????sum=sum+num[i];
	???????????if(B<=num[i]){
	???????????B=num[i];?
	??????}else?if(S>=num[i]){
	???????S=num[i];
	??????}
	??????}
	??????avg=sum/7;
	??????System.out.println(S);
	??????System.out.println(B);
	??????System.out.println(B+S+sum+avg);
	??}
}