src/main/java/com/fishercoder/solutions/_1317.java

package com.fishercoder.solutions;

/**
 * 1317. Convert Integer to the Sum of Two No-Zero Integers
 *
 * Given an integer n. No-Zero integer is a positive integer which doesn't contain any 0 in its decimal representation.
 *
 * Return a list of two integers [A, B] where:
 * A and B are No-Zero integers.
 * A + B = n
 * It's guarateed that there is at least one valid solution. If there are many valid solutions you can return any of them.
 *
 * Example 1:
 * Input: n = 2
 * Output: [1,1]
 * Explanation: A = 1, B = 1. A + B = n and both A and B don't contain any 0 in their decimal representation.
 *
 * 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]
 *
 * Constraints:
 * 2 <= n <= 10^4
 * */
public class _1317 {
    public static class Solution1 {
        public int[] getNoZeroIntegers(int n) {
            int left = 1;
            int right = n - 1;
            while (left <= right) {
                if (noZero(left) && noZero(right)) {
                    return new int[]{left, right};
                } else {
                    left++;
                    right--;
                }
            }
            return null;
        }

        private boolean noZero(int num) {
            while (num != 0) {
                if (num % 10 == 0) {
                    return false;
                } else {
                    num /= 10;
                }
            }
            return true;
        }
    }
}