mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
20 lines
812 B
HTML
20 lines
812 B
HTML
|
<p>Given a string <code>s</code>, consider all <em>duplicated substrings</em>: (contiguous) substrings of s that occur 2 or more times. The occurrences may overlap.</p>
|
||
|
|
|
||
|
|
<p>Return <strong>any</strong> duplicated substring that has the longest possible length. If <code>s</code> does not have a duplicated substring, the answer is <code>""</code>.</p>
|
||
|
|
|
||
|
|
<p> </p>
|
||
|
|
<p><strong>Example 1:</strong></p>
|
||
|
|
<pre><strong>Input:</strong> s = "banana"
|
||
|
|
<strong>Output:</strong> "ana"
|
||
|
|
</pre><p><strong>Example 2:</strong></p>
|
||
|
|
<pre><strong>Input:</strong> s = "abcd"
|
||
|
|
<strong>Output:</strong> ""
|
||
|
|
</pre>
|
||
|
|
<p> </p>
|
||
|
|
<p><strong>Constraints:</strong></p>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><code>2 <= s.length <= 3 * 10<sup>4</sup></code></li>
|
||
|
|
<li><code>s</code> consists of lowercase English letters.</li>
|
||
|
|
</ul>
|