Move Zeroes
<p>Given an integer array <code>nums</code>, move all <code>0</code>&#39;s to the end of it while maintaining the relative order of the non-zero elements.</p>

<p><strong>Note</strong> that you must do this in-place without making a copy of the array.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>
<pre><strong>Input:</strong> nums = [0,1,0,3,12]
<strong>Output:</strong> [1,3,12,0,0]
</pre><p><strong class="example">Example 2:</strong></p>
<pre><strong>Input:</strong> nums = [0]
<strong>Output:</strong> [0]
</pre>
<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>1 &lt;= nums.length &lt;= 10<sup>4</sup></code></li>
	<li><code>-2<sup>31</sup> &lt;= nums[i] &lt;= 2<sup>31</sup> - 1</code></li>
</ul>

<p>&nbsp;</p>
<strong>Follow up:</strong> Could you minimize the total number of operations done?
Array; Two Pointers
class Solution {
    public void moveZeroes(int[] nums) {
        int k = 0, n = nums.length;
        for (int i = 0; i < n; ++i) {
            if (nums[i] != 0) {
                int t = nums[i];
                nums[i] = nums[k];
                nums[k++] = t;
            }
        }
    }
}
