public class Sum {
public static int count(int n) {
if (n > 1) {
return count(n - 1) + n;
} else {
return n;
}
}
public static void main(String[] args) {
System.out.println(Sum.count(100));
}
}
原文：https://www.cnblogs.com/xieshilin/p/12244526.html