Daily question -1317 Converts an integer to the sum of two zero free integers

subject ：

「 Zero free integer 」 Is in the decimal representation It doesn't contain any 0  The positive integer .

Give you an integer  n, Please return one A list of two integers [A, B], Satisfy ：

A and B  Are zero free integers
A + B = n
The problem data ensures that there is at least one effective solution .

If there are multiple effective solutions , You can return any of them .

Example 1：

Input ：n = 2
Output ：[1,1]
explain ：A = 1, B = 1. A + B = n also A and B The decimal representation of does not contain any 0 .
Example 2：

Input ：n = 11
Output ：[2,9]
Example 3：

Input ：n = 10000
Output ：[1,9999]
Example 4：

Input ：n = 69
Output ：[1,68]
Example 5：

Input ：n = 1010
Output ：[11,999]

Tips ：

2 <= n <= 10^4

java Code ：

class Solution {
    public int[] getNoZeroIntegers(int n) {
            int a = n-1;
            int b = 1;
            while (true) {
                if(isValid(a) && isValid(b)) {
                    return new int[]{a,b};
                }
                a--;
                b++;
            }

        }
        
        private boolean isValid(int a) {
            if(a%10 ==0) {
                return false;
            }
            
            while (a>0) {
                int temp = a%10;
                if(temp ==0) {
                    return false;
                }
                
                a/=10;
            }
            
            return true;
        }
}