存量题库数据更新

leetcode/problem/distinct-subsequences-ii.html

@@ -1,7 +1,7 @@
 <p>Given a string s, return <em>the number of <strong>distinct non-empty subsequences</strong> of</em> <code>s</code>. Since the answer may be very large, return it <strong>modulo</strong> <code>10<sup>9</sup> + 7</code>.</p>
 A <strong>subsequence</strong> of a string is a new string that is formed from the original string by deleting some (can be none) of the characters without disturbing the relative positions of the remaining characters. (i.e., <code>&quot;ace&quot;</code> is a subsequence of <code>&quot;<u>a</u>b<u>c</u>d<u>e</u>&quot;</code> while <code>&quot;aec&quot;</code> is not.
 <p>&nbsp;</p>
-<p><strong>Example 1:</strong></p>
+<p><strong class="example">Example 1:</strong></p>
 
 <pre>
 <strong>Input:</strong> s = &quot;abc&quot;
@@ -9,7 +9,7 @@ A <strong>subsequence</strong> of a string is a new string that is formed from t
 <strong>Explanation:</strong> The 7 distinct subsequences are &quot;a&quot;, &quot;b&quot;, &quot;c&quot;, &quot;ab&quot;, &quot;ac&quot;, &quot;bc&quot;, and &quot;abc&quot;.
 </pre>
 
-<p><strong>Example 2:</strong></p>
+<p><strong class="example">Example 2:</strong></p>
 
 <pre>
 <strong>Input:</strong> s = &quot;aba&quot;
@@ -17,7 +17,7 @@ A <strong>subsequence</strong> of a string is a new string that is formed from t
 <strong>Explanation:</strong> The 6 distinct subsequences are &quot;a&quot;, &quot;b&quot;, &quot;ab&quot;, &quot;aa&quot;, &quot;ba&quot;, and &quot;aba&quot;.
 </pre>
 
-<p><strong>Example 3:</strong></p>
+<p><strong class="example">Example 3:</strong></p>
 
 <pre>
 <strong>Input:</strong> s = &quot;aaa&quot;