Convert Integer to the Sum of Two No-Zero Integers
No-Zero integer is a positive integer that does not contain any 0 in its decimal representation.
Given an integer n, return a list of two integers [a, b] where:
a and b are No-Zero integers.
a + b = n
The test cases are generated so 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: Let a = 1 and b = 1.
Both a and b are no-zero integers, and a + b = 2 = n.
Example 2:
Input: n = 11
Output: [2,9]
Explanation: Let a = 2 and b = 9.
Both a and b are no-zero integers, and a + b = 9 = n.
Note that there are other valid answers as [8, 3] that can be accepted.
Constraints:
2 <= n <= 104
思路一：随机选数字
public int[] getNoZeroIntegers(int n) {
int[] result = new int[2];
while (true) {
int x = (int) (Math.random() * n);
if (isNoZeroInteger(x) && isNoZeroInteger(n - x)) {
result[0] = x;
result[1] = n - x;
break;
}
}
return result;
}
public boolean isNoZeroInteger(int n) {
if (n == 0) {
return false;
}
while (n > 0) {
int x = n % 10;
n /= 10;
if (x == 0) {
return false;
}
}
return true;
}