#### Find Common Integers

You are given two arrays of integers as arguments. Return a new array of integers containing only the common integers.

Assume that there will be at least one common integer in both arrays.

### Requirements

- Must return an array of integers
- Must also handle negative integers

#### Example #1

```
solve([2, 10, 1, 3, 1, 8], [3, 7, 10, 9, 2])
> [2, 10, 3]
```

#### Example #2

```
solve([2, 10, 1, -3, 1, 8], [-3, 7, 10, 5, -2])
> [10, -3]
```