<h2><a href="https://leetcode.com/problems/minimum-array-end/">3133. Minimum Array End</a></h2><h3>Medium</h3><hr><div><p>You are given two integers <code>n</code> and <code>x</code>. You have to construct an array of <strong>positive</strong> integers <code>nums</code> of size <code>n</code> where for every <code>0 &lt;= i &lt; n - 1</code>, <code>nums[i + 1]</code> is <strong>greater than</strong> <code>nums[i]</code>, and the result of the bitwise <code>AND</code> operation between all elements of <code>nums</code> is <code>x</code>.</p>

<p>Return the <strong>minimum</strong> possible value of <code>nums[n - 1]</code>.</p>

<p>&nbsp;</p>

<p><strong class="example">Example 1:</strong></p>

<div class="example-block">

<p><strong>Input:</strong> <span class="example-io">n = 3, x = 4</span></p>

<p><strong>Output:</strong> <span class="example-io">6</span></p>

<p><strong>Explanation:</strong></p>

<p><code>nums</code> can be <code>[4,5,6]</code> and its last element is 6.</p>

</div>

<p><strong class="example">Example 2:</strong></p>

<div class="example-block">

<p><strong>Input:</strong> <span class="example-io">n = 2, x = 7</span></p>

<p><strong>Output:</strong> <span class="example-io">15</span></p>

<p><strong>Explanation:</strong></p>

<p><code>nums</code> can be <code>[7,15]</code> and its last element is 15.</p>

</div>

<p>&nbsp;</p>

<p><strong>Constraints:</strong></p>

<ul>

<li><code>1 &lt;= n, x &lt;= 10⁸</code></li>

</ul>

</div>