<p>Given the <code>root</code> of a binary tree, return <em>all root-to-leaf paths in <strong>any order</strong></em>.</p> <p>A <strong>leaf</strong> is a node with no children.</p> <p> </p> <p><strong>Example 1:</strong></p> <img alt="" src="https://assets.leetcode.com/uploads/2021/03/12/paths-tree.jpg" style="width: 207px; height: 293px;" /> <pre> <strong>Input:</strong> root = [1,2,3,null,5] <strong>Output:</strong> ["1->2->5","1->3"] </pre> <p><strong>Example 2:</strong></p> <pre> <strong>Input:</strong> root = [1] <strong>Output:</strong> ["1"] </pre> <p> </p> <p><strong>Constraints:</strong></p> <ul> <li>The number of nodes in the tree is in the range <code>[1, 100]</code>.</li> <li><code>-100 <= Node.val <= 100</code></li> </ul>