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leetcode-cn/problem (Chinese)/找不同 [find-the-difference].html Normal file
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<p>给定两个字符串 <code>s</code> 和 <code>t</code>&nbsp;，它们只包含小写字母。</p>
<p>字符串 <code>t</code>&nbsp;由字符串 <code>s</code> 随机重排，然后在随机位置添加一个字母。</p>
<p>请找出在 <code>t</code>&nbsp;中被添加的字母。</p>
<p>&nbsp;</p>
<p><strong>示例 1：</strong></p>
<pre>
<strong>输入：</strong>s = "abcd", t = "abcde"
<strong>输出：</strong>"e"
<strong>解释：</strong>'e' 是那个被添加的字母。
</pre>
<p><strong>示例 2：</strong></p>
<pre>
<strong>输入：</strong>s = "", t = "y"
<strong>输出：</strong>"y"
</pre>
<p>&nbsp;</p>
<p><strong>提示：</strong></p>
<ul>
<li><code>0 &lt;= s.length &lt;= 1000</code></li>
<li><code>t.length == s.length + 1</code></li>
<li><code>s</code> 和 <code>t</code> 只包含小写字母</li>
</ul>