leetcode-problemset/leetcode-cn/originData/unique-email-addresses.json

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            "title": "Unique Email Addresses",
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            "content": "<p>Every <strong>valid email</strong> consists of a <strong>local name</strong> and a <strong>domain name</strong>, separated by the <code>&#39;@&#39;</code> sign. Besides lowercase letters, the email may contain one or more <code>&#39;.&#39;</code> or <code>&#39;+&#39;</code>.</p>\n\n<ul>\n\t<li>For example, in <code>&quot;alice@leetcode.com&quot;</code>, <code>&quot;alice&quot;</code> is the <strong>local name</strong>, and <code>&quot;leetcode.com&quot;</code> is the <strong>domain name</strong>.</li>\n</ul>\n\n<p>If you add periods <code>&#39;.&#39;</code> between some characters in the <strong>local name</strong> part of an email address, mail sent there will be forwarded to the same address without dots in the local name. Note that this rule <strong>does not apply</strong> to <strong>domain names</strong>.</p>\n\n<ul>\n\t<li>For example, <code>&quot;alice.z@leetcode.com&quot;</code> and <code>&quot;alicez@leetcode.com&quot;</code> forward to the same email address.</li>\n</ul>\n\n<p>If you add a plus <code>&#39;+&#39;</code> in the <strong>local name</strong>, everything after the first plus sign <strong>will be ignored</strong>. This allows certain emails to be filtered. Note that this rule <strong>does not apply</strong> to <strong>domain names</strong>.</p>\n\n<ul>\n\t<li>For example, <code>&quot;m.y+name@email.com&quot;</code> will be forwarded to <code>&quot;my@email.com&quot;</code>.</li>\n</ul>\n\n<p>It is possible to use both of these rules at the same time.</p>\n\n<p>Given an array of strings <code>emails</code> where we send one email to each <code>emails[i]</code>, return <em>the number of different addresses that actually receive mails</em>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> emails = [&quot;test.email+alex@leetcode.com&quot;,&quot;test.e.mail+bob.cathy@leetcode.com&quot;,&quot;testemail+david@lee.tcode.com&quot;]\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> &quot;testemail@leetcode.com&quot; and &quot;testemail@lee.tcode.com&quot; actually receive mails.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> emails = [&quot;a@leetcode.com&quot;,&quot;b@leetcode.com&quot;,&quot;c@leetcode.com&quot;]\n<strong>Output:</strong> 3\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= emails.length &lt;= 100</code></li>\n\t<li><code>1 &lt;= emails[i].length &lt;= 100</code></li>\n\t<li><code>emails[i]</code> consist of lowercase English letters, <code>&#39;+&#39;</code>, <code>&#39;.&#39;</code> and <code>&#39;@&#39;</code>.</li>\n\t<li>Each <code>emails[i]</code> contains exactly one <code>&#39;@&#39;</code> character.</li>\n\t<li>All local and domain names are non-empty.</li>\n\t<li>Local names do not start with a <code>&#39;+&#39;</code> character.</li>\n\t<li>Domain names end with the <code>&quot;.com&quot;</code> suffix.</li>\n</ul>\n",
            "translatedTitle": "独特的电子邮件地址",
            "translatedContent": "<p>每个 <strong>有效电子邮件地址</strong> 都由一个 <strong>本地名</strong> 和一个 <strong>域名</strong> 组成，以 <code>'@'</code> 符号分隔。除小写字母之外，电子邮件地址还可以含有一个或多个&nbsp;<code>'.'</code> 或 <code>'+'</code> 。</p>\n\n<ul>\n\t<li>例如，在&nbsp;<code>alice@leetcode.com</code>中，&nbsp;<code>alice</code>&nbsp;是 <strong>本地名</strong> ，而&nbsp;<code>leetcode.com</code>&nbsp;是 <strong>域名</strong> 。</li>\n</ul>\n\n<p>如果在电子邮件地址的<strong> 本地名 </strong>部分中的某些字符之间添加句点（<code>'.'</code>），则发往那里的邮件将会转发到本地名中没有点的同一地址。请注意，此规则 <strong>不适用于域名</strong> 。</p>\n\n<ul>\n\t<li>例如，<code>\"alice.z@leetcode.com”</code> 和 <code>“alicez@leetcode.com”</code>&nbsp;会转发到同一电子邮件地址。</li>\n</ul>\n\n<p>如果在<strong> 本地名 </strong>中添加加号（<code>'+'</code>），则会忽略第一个加号后面的所有内容。这允许过滤某些电子邮件。同样，此规则 <strong>不适用于域名</strong> 。</p>\n\n<ul>\n\t<li>例如 <code>m.y+name@email.com</code> 将转发到 <code>my@email.com</code>。</li>\n</ul>\n\n<p>可以同时使用这两个规则。</p>\n\n<p>给你一个字符串数组 <code>emails</code>，我们会向每个 <code>emails[i]</code> 发送一封电子邮件。返回实际收到邮件的不同地址数目。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>emails = [\"test.email+alex@leetcode.com\",\"test.e.mail+bob.cathy@leetcode.com\",\"testemail+david@lee.tcode.com\"]\n<strong>输出：</strong>2\n<strong>解释：</strong>实际收到邮件的是 \"testemail@leetcode.com\" 和 \"testemail@lee.tcode.com\"。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>emails = [\"a@leetcode.com\",\"b@leetcode.com\",\"c@leetcode.com\"]\n<strong>输出：</strong>3\n</pre>\n\n<p><br />\n<strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= emails.length &lt;= 100</code></li>\n\t<li><code>1 &lt;= emails[i].length&nbsp;&lt;= 100</code></li>\n\t<li><code>emails[i]</code> 由小写英文字母、<code>'+'</code>、<code>'.'</code> 和 <code>'@'</code> 组成</li>\n\t<li>每个 <code>emails[i]</code> 都包含有且仅有一个 <code>'@'</code> 字符</li>\n\t<li>所有本地名和域名都不为空</li>\n\t<li>本地名不会以 <code>'+'</code> 字符作为开头</li>\n</ul>\n",
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