可变参数的基本使用
public class ArgsDemo01 {
public static void main(String[] args) {
System.out.println(sum(10, 20));
System.out.println(sum(10, 20, 30));
System.out.println(sum(10, 20, 30, 40));
System.out.println(sum(10,20,30,40,50));
System.out.println(sum(10,20,30,40,50,60));
System.out.println(sum(10,20,30,40,50,60,70));
System.out.println(sum(10,20,30,40,50,60,70,80,90,100));
}
// public static int sum(int b,int... a) {
// return 0;
// }
public static int sum(int... a) {
int sum = 0;
for(int i : a) {
sum += i;
}
return sum;
}
}