Java Algorithm interview question: recursive algorithm question 2 1st people 10, 2nd people two years older than 1st people, recursive in turn, please use recursion to calculate the size of 8th People ?, Java Recursion

Java Algorithm interview question: recursive algorithm question 2 1st people 10, 2nd people two years older than 1st people, recursive in turn, please use recursion to calculate the size of 8th People ?, Java Recursion

Package com. swift; public class Digui_Return {public static void main (String [] args) {/** recursive algorithm question 2 1st people 10, 2nd people two years older than 1st people, recursive in turn, calculate the size of 8th People in recursion mode? */Int num = 8; System. out. println ("The 8th person's age is" + old (num);} public static int old (int num) {if (num = 1) {return 10 ;} else {return 2 + old (-- num );}}}