import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
int n= sc.nextInt();
long sum=sum(n);
System.out.println(sum);
}
public static long sum(int n) {
if(n>0) {
return n+sum(n-1);
}else {
return 0;
}
}
}
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
int n= sc.nextInt();
long sum=sum(n);
System.out.println(sum);
}
public static long sum(int n) {
if(n>0) {
return n+sum(n-1);
}else {
return 0;
}
}
}
当输入n值过大时，就出现了StackOverflowError错误，求解决
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