Thread: my first recursion ,what did i do wrong?

public static boolean q8(int n){
	boolean check=true;
 
		if((n/10)<0){
			return check;
		}
		int f=n%10;
		int r=(n/10)%10;
		if((f%2==0)&&(r%2==0)){
			return check=false;
		}
		q8(n/10);
		return check;
 
 
	}

the recursion need to get a number and return true if each pair of digits are one even and the other odd.
false if not.
how can i write it better ?for example:for the number 230 -->return true(which is correct)
but for the number 243---->return true(which should be false) cause it takes 2 and 0 from the begining.
how can i rewrite correct?

--- Update ---

public static boolean q8(int n){
 
		int f=n%10;
		int r=(n/10)%10;
		if((f%2==0)&&(r%2==0)&&((n/10)>0)){
			return false;
		}
 
 
		return q8(n/10);
 
 
 
	}

this is my second try.it works only if the numbers is false.on true numbers it doesnt work?
any idea how to correct me?

the recursion need to get a number and return true if each pair of digits are one even and the other odd.
false if not.

Can you explain this better?

Show what you mean by "each pair of digits." For example, using your 230, I would think the pairs of digits would be 23, 30, and maybe 20. For 243, 24, 43, and maybe 23. Use an example and show which pairs of digits the program should consider. Then, considering the pairs of digits, show what the method should return, true or false, and explain why.