Dutch National Flag

Given an array of 0s, 1s, and 2s representing red, white, and blue, respectively, sort the array in place so that it resembles the Dutch national flag, with all reds (0s) coming first, followed by whites (1s), and finally blues (2s).

Example:

Input: nums = [0, 1, 2, 0, 1, 2, 0]
Output: [0, 0, 0, 1, 1, 2, 2]