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leetcode-cn/problem (Chinese)/Excel 表列名称 [excel-sheet-column-title].html Normal file
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<p>给你一个整数 <code>columnNumber</code> ，返回它在 Excel 表中相对应的列名称。</p>
<p>例如：</p>
<pre>
A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28
...
</pre>
<p> </p>
<p><strong>示例 1：</strong></p>
<pre>
<strong>输入：</strong>columnNumber = 1
<strong>输出：</strong>"A"
</pre>
<p><strong>示例 2：</strong></p>
<pre>
<strong>输入：</strong>columnNumber = 28
<strong>输出：</strong>"AB"
</pre>
<p><strong>示例 3：</strong></p>
<pre>
<strong>输入：</strong>columnNumber = 701
<strong>输出：</strong>"ZY"
</pre>
<p><strong>示例 4：</strong></p>
<pre>
<strong>输入：</strong>columnNumber = 2147483647
<strong>输出：</strong>"FXSHRXW"
</pre>
<p> </p>
<p><strong>提示：</strong></p>
<ul>
<li><code>1 <= columnNumber <= 2<sup>31</sup> - 1</code></li>
</ul>