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# Solution: Two Single Numbers

## Problem Statement

In a non-empty array of numbers, every number appears exactly twice except two numbers that appear only once. Find the two numbers that appear only once.

**Example 1**:

```
Input: [1, 4, 2, 1, 3, 5, 6, 2, 3, 5]
Output: [4, 6]
```

**Example 2**:

```
Input: [2, 1, 3, 2]
Output: [1, 3]
```

**Constraints:**

- 1 <= nums.length <= 3 * 10<sup>4</sup>
- -3 * 10<sup>4</sup> <= nums[i] <= 3 * 10<sup>4</sup>
- Each element in the array appears
`twice`

except for two element which appears only once.

## Solution

This problem is quite similar to `Single Number

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