<p>Given two strings <code>word1</code> and <code>word2</code>, return <em>the minimum number of <strong>steps</strong> required to make</em> <code>word1</code> <em>and</em> <code>word2</code> <em>the same</em>.</p> <p>In one <strong>step</strong>, you can delete exactly one character in either string.</p> <p> </p> <p><strong>Example 1:</strong></p> <pre> <strong>Input:</strong> word1 = "sea", word2 = "eat" <strong>Output:</strong> 2 <strong>Explanation:</strong> You need one step to make "sea" to "ea" and another step to make "eat" to "ea". </pre> <p><strong>Example 2:</strong></p> <pre> <strong>Input:</strong> word1 = "leetcode", word2 = "etco" <strong>Output:</strong> 4 </pre> <p> </p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= word1.length, word2.length <= 500</code></li> <li><code>word1</code> and <code>word2</code> consist of only lowercase English letters.</li> </ul>