## Problem Statement

Given a 3 or 4 digit number with distinct digits, return a sorted array of all the unique numbers than can be formed with those digits.

**Example:**

Given:

`123`

Return:

`[123, 132, 213, 231, 312, 321]`

**Note:**
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Given a 3 or 4 digit number with distinct digits, return a sorted array of all the unique numbers than can be formed with those digits.

Given:

`123`

Return:

`[123, 132, 213, 231, 312, 321]`

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