<p>Given an integer array of even length <code>arr</code>, return <code>true</code><em> if it is possible to reorder </em><code>arr</code><em> such that </em><code>arr[2 * i + 1] = 2 * arr[2 * i]</code><em> for every </em><code>0 <= i < len(arr) / 2</code><em>, or </em><code>false</code><em> otherwise</em>.</p> <p> </p> <p><strong>Example 1:</strong></p> <pre> <strong>Input:</strong> arr = [3,1,3,6] <strong>Output:</strong> false </pre> <p><strong>Example 2:</strong></p> <pre> <strong>Input:</strong> arr = [2,1,2,6] <strong>Output:</strong> false </pre> <p><strong>Example 3:</strong></p> <pre> <strong>Input:</strong> arr = [4,-2,2,-4] <strong>Output:</strong> true <strong>Explanation:</strong> We can take two groups, [-2,-4] and [2,4] to form [-2,-4,2,4] or [2,4,-2,-4]. </pre> <p> </p> <p><strong>Constraints:</strong></p> <ul> <li><code>2 <= arr.length <= 3 * 10<sup>4</sup></code></li> <li><code>arr.length</code> is even.</li> <li><code>-10<sup>5</sup> <= arr[i] <= 10<sup>5</sup></code></li> </ul>