Count Integers With an Even Decimal Length
Company: Google
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: easy
Interview Round: Other
### Problem
Return how many positive integers in nums have an even number of decimal digits. Count each input occurrence separately.
```cpp
class Solution {
public:
int findNumbers(vector<int>& nums);
};
```
### Examples
**Example 1:**
```text
Input: nums = [9,10,100,1000,100000]
Output: 3
Explanation:10 has2 digits,1000 has4,and100000 has6.
```
**Example 2:**
```text
Input: nums = [1,999,12345]
Output: 0
Explanation: Their digit counts1,3,5 are all odd.
```
### Constraints
- There are 1 to 500 values.
- Each is an integer in `[1,100000]`.
### Contract considerations
Inputs are positive integers, so leading-zero text is not part of the representation.
```hint Read the boundary condition
Are equal input values counted by occurrence, and can leading-zero text affect a positive integer’s digit length?
```
### Boundary reminders
Inputs are positive integers, so leading-zero text is not part of the representation.
Overview: Count Integers With an Even Decimal Length. Return how many positive integers in nums have an even number of decimal digits.