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leetcode-cn/problem (Chinese)/字符串的反转度 [reverse-degree-of-a-string].html Normal file
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<p>给你一个字符串 <code>s</code>，计算其 <strong>反转度</strong>。</p>
<p><strong>反转度</strong>的计算方法如下：</p>
<ol>
<li>对于每个字符，将其在 <strong>反转</strong> 字母表中的位置（<code>'a'</code> = 26, <code>'b'</code> = 25, ..., <code>'z'</code> = 1）与其在字符串中的位置（下标从<strong>1 </strong>开始）相乘。</li>
<li>将这些乘积加起来，得到字符串中所有字符的和。</li>
</ol>
<p>返回 <strong>反转度</strong>。</p>
<p>&nbsp;</p>
<p><strong class="example">示例 1：</strong></p>
<div class="example-block">
<p><strong>输入：</strong> <span class="example-io">s = "abc"</span></p>
<p><strong>输出：</strong> <span class="example-io">148</span></p>
<p><strong>解释：</strong></p>
<table style="border: 1px solid black;">
<tbody>
<tr>
<th style="border: 1px solid black;">字母</th>
<th style="border: 1px solid black;">反转字母表中的位置</th>
<th style="border: 1px solid black;">字符串中的位置</th>
<th style="border: 1px solid black;">乘积</th>
</tr>
<tr>
<td style="border: 1px solid black;"><code>'a'</code></td>
<td style="border: 1px solid black;">26</td>
<td style="border: 1px solid black;">1</td>
<td style="border: 1px solid black;">26</td>
</tr>
<tr>
<td style="border: 1px solid black;"><code>'b'</code></td>
<td style="border: 1px solid black;">25</td>
<td style="border: 1px solid black;">2</td>
<td style="border: 1px solid black;">50</td>
</tr>
<tr>
<td style="border: 1px solid black;"><code>'c'</code></td>
<td style="border: 1px solid black;">24</td>
<td style="border: 1px solid black;">3</td>
<td style="border: 1px solid black;">72</td>
</tr>
</tbody>
</table>
<p>反转度是 <code>26 + 50 + 72 = 148</code> 。</p>
</div>
<p><strong class="example">示例 2：</strong></p>
<div class="example-block">
<p><strong>输入：</strong> <span class="example-io">s = "zaza"</span></p>
<p><strong>输出：</strong> <span class="example-io">160</span></p>
<p><strong>解释：</strong></p>
<table style="border: 1px solid black;">
<tbody>
<tr>
<th style="border: 1px solid black;">字母</th>
<th style="border: 1px solid black;">反转字母表中的位置</th>
<th style="border: 1px solid black;">字符串中的位置</th>
<th style="border: 1px solid black;">乘积</th>
</tr>
<tr>
<td style="border: 1px solid black;"><code>'z'</code></td>
<td style="border: 1px solid black;">1</td>
<td style="border: 1px solid black;">1</td>
<td style="border: 1px solid black;">1</td>
</tr>
<tr>
<td style="border: 1px solid black;"><code>'a'</code></td>
<td style="border: 1px solid black;">26</td>
<td style="border: 1px solid black;">2</td>
<td style="border: 1px solid black;">52</td>
</tr>
<tr>
<td style="border: 1px solid black;"><code>'z'</code></td>
<td style="border: 1px solid black;">1</td>
<td style="border: 1px solid black;">3</td>
<td style="border: 1px solid black;">3</td>
</tr>
<tr>
<td style="border: 1px solid black;"><code>'a'</code></td>
<td style="border: 1px solid black;">26</td>
<td style="border: 1px solid black;">4</td>
<td style="border: 1px solid black;">104</td>
</tr>
</tbody>
</table>
</div>
<p>反转度是 <code>1 + 52 + 3 + 104 = 160</code>&nbsp;。</p>
<p>&nbsp;</p>
<p><strong>提示：</strong></p>
<ul>
<li><code>1 &lt;= s.length &lt;= 1000</code></li>
<li><code>s</code> 仅包含小写字母。</li>
</ul>