何为递归
示例
public static void main(String[] args) {
System.out.println(fn(5));
}
static int fn(int a){
return a == 1 ? 1 : a * fn(a - 1);
}
public static void main(String[] args) {
System.out.println(fn(5));
}
static int fn(int a){
return a == 1 ? 1 : a * fn(a - 1);
}