Given an array `nums`

, write a function to move all `0`

's to the end of it while maintaining the relative order of the non-zero elements.

**Example:**

Input:`[0,1,0,3,12]`

Output:`[1,3,12,0,0]`

**Note**:

- You must do this
**in-place**without making a copy of the array. - Minimize the total number of operations.