<p>Given an array of positive integers <code>nums</code>, return <em>an array </em><code>answer</code><em> that consists of the digits of each integer in </em><code>nums</code><em> after separating them in <strong>the same order</strong> they appear in </em><code>nums</code>.</p> <p>To separate the digits of an integer is to get all the digits it has in the same order.</p> <ul> <li>For example, for the integer <code>10921</code>, the separation of its digits is <code>[1,0,9,2,1]</code>.</li> </ul> <p> </p> <p><strong class="example">Example 1:</strong></p> <pre> <strong>Input:</strong> nums = [13,25,83,77] <strong>Output:</strong> [1,3,2,5,8,3,7,7] <strong>Explanation:</strong> - The separation of 13 is [1,3]. - The separation of 25 is [2,5]. - The separation of 83 is [8,3]. - The separation of 77 is [7,7]. answer = [1,3,2,5,8,3,7,7]. Note that answer contains the separations in the same order. </pre> <p><strong class="example">Example 2:</strong></p> <pre> <strong>Input:</strong> nums = [7,1,3,9] <strong>Output:</strong> [7,1,3,9] <strong>Explanation:</strong> The separation of each integer in nums is itself. answer = [7,1,3,9]. </pre> <p> </p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= nums.length <= 1000</code></li> <li><code>1 <= nums[i] <= 10<sup>5</sup></code></li> </ul>