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{
"data": {
"question": {
"questionId": "3540",
"questionFrontendId": "3271",
"categoryTitle": "Algorithms",
"boundTopicId": 2896595,
"title": "Hash Divided String",
"titleSlug": "hash-divided-string",
"content": "<p>You are given a string <code>s</code> of length <code>n</code> and an integer <code>k</code>, where <code>n</code> is a <strong>multiple</strong> of <code>k</code>. Your task is to hash the string <code>s</code> into a new string called <code>result</code>, which has a length of <code>n / k</code>.</p>\n\n<p>First, divide <code>s</code> into <code>n / k</code> <strong><span data-keyword=\"substring-nonempty\">substrings</span></strong>, each with a length of <code>k</code>. Then, initialize <code>result</code> as an <strong>empty</strong> string.</p>\n\n<p>For each <strong>substring</strong> in order from the beginning:</p>\n\n<ul>\n\t<li>The <strong>hash value</strong> of a character is the index of that characte<!-- notionvc: 4b67483a-fa95-40b6-870d-2eacd9bc18d8 -->r in the <strong>English alphabet</strong> (e.g., <code>&#39;a&#39; &rarr;<!-- notionvc: d3f8e4c2-23cd-41ad-a14b-101dfe4c5aba --> 0</code>, <code>&#39;b&#39; &rarr;<!-- notionvc: d3f8e4c2-23cd-41ad-a14b-101dfe4c5aba --> 1</code>, ..., <code>&#39;z&#39; &rarr;<!-- notionvc: d3f8e4c2-23cd-41ad-a14b-101dfe4c5aba --> 25</code>).</li>\n\t<li>Calculate the <em>sum</em> of all the <strong>hash values</strong> of the characters in the substring.</li>\n\t<li>Find the remainder of this sum when divided by 26, which is called <code>hashedChar</code>.</li>\n\t<li>Identify the character in the English lowercase alphabet that corresponds to <code>hashedChar</code>.</li>\n\t<li>Append that character to the end of <code>result</code>.</li>\n</ul>\n\n<p>Return <code>result</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">s = &quot;abcd&quot;, k = 2</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">&quot;bf&quot;</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>First substring: <code>&quot;ab&quot;</code>, <code>0 + 1 = 1</code>, <code>1 % 26 = 1</code>, <code>result[0] = &#39;b&#39;</code>.</p>\n\n<p>Second substring: <code>&quot;cd&quot;</code>, <code>2 + 3 = 5</code>, <code>5 % 26 = 5</code>, <code>result[1] = &#39;f&#39;</code>.</p>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">s = &quot;mxz&quot;, k = 3</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">&quot;i&quot;</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The only substring: <code>&quot;mxz&quot;</code>, <code>12 + 23 + 25 = 60</code>, <code>60 % 26 = 8</code>, <code>result[0] = &#39;i&#39;</code>.</p>\n</div>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= k &lt;= 100</code></li>\n\t<li><code>k &lt;= s.length &lt;= 1000</code></li>\n\t<li><code>s.length</code> is divisible by <code>k</code>.</li>\n\t<li><code>s</code> consists only of lowercase English letters.</li>\n</ul>\n",
"translatedTitle": "哈希分割字符串",
"translatedContent": "<p>给你一个长度为 <code>n</code>&nbsp;的字符串 <code>s</code>&nbsp;和一个整数&nbsp;<code>k</code>&nbsp;<code>n</code>&nbsp;是 <code>k</code>&nbsp;的 <strong>倍数</strong>&nbsp;。你的任务是将字符串 <code>s</code>&nbsp;哈希为一个长度为 <code>n / k</code>&nbsp;的新字符串&nbsp;<code>result</code>&nbsp;。</p>\n\n<p>首先,将&nbsp;<code>s</code>&nbsp;分割成&nbsp;<code>n / k</code>&nbsp;个&nbsp;<strong><span data-keyword=\"substring-nonempty\">子字符串</span></strong>&nbsp;,每个子字符串的长度都为&nbsp;<code>k</code>&nbsp;。然后,将&nbsp;<code>result</code>&nbsp;初始化为一个 <strong>空</strong>&nbsp;字符串。</p>\n\n<p>我们依次从前往后处理每一个 <strong>子字符串</strong>&nbsp;</p>\n\n<ul>\n\t<li>一个字符的 <strong>哈希值</strong>&nbsp;是它在 <strong>字母表</strong>&nbsp;中的下标(也就是&nbsp;<code>'a' →<!-- notionvc: d3f8e4c2-23cd-41ad-a14b-101dfe4c5aba --> 0</code>&nbsp;<code>'b' →<!-- notionvc: d3f8e4c2-23cd-41ad-a14b-101dfe4c5aba --> 1</code>&nbsp;... <code>'z' →<!-- notionvc: d3f8e4c2-23cd-41ad-a14b-101dfe4c5aba --> 25</code>)。</li>\n\t<li>将子字符串中字幕的 <strong>哈希值</strong>&nbsp;求和。</li>\n\t<li>将和对 26 取余,将结果记为&nbsp;<code>hashedChar</code>&nbsp;。</li>\n\t<li>找到小写字母表中 <code>hashedChar</code>&nbsp;对应的字符。</li>\n\t<li>将该字符添加到&nbsp;<code>result</code>&nbsp;的末尾。</li>\n</ul>\n\n<p>返回&nbsp;<code>result</code>&nbsp;。</p>\n\n<p>&nbsp;</p>\n\n<p><strong class=\"example\">示例 1</strong></p>\n\n<div class=\"example-block\">\n<p><span class=\"example-io\"><b>输入:</b>s = \"abcd\", k = 2</span></p>\n\n<p><span class=\"example-io\"><b>输出:</b>\"bf\"</span></p>\n\n<p><b>解释:</b></p>\n\n<p>第一个字符串为&nbsp;<code>\"ab\"</code>&nbsp;<code>0 + 1 = 1</code>&nbsp;<code>1 % 26 = 1</code>&nbsp;<code>result[0] = 'b'</code>&nbsp;。</p>\n\n<p>第二个字符串为: <code>\"cd\"</code>&nbsp;<code>2 + 3 = 5</code>&nbsp;<code>5 % 26 = 5</code>&nbsp;<code>result[1] = 'f'</code>&nbsp;。</p>\n</div>\n\n<p><strong class=\"example\">示例 2</strong></p>\n\n<div class=\"example-block\">\n<p><span class=\"example-io\"><b>输入:</b>s = \"mxz\", k = 3</span></p>\n\n<p><span class=\"example-io\"><b>输出:</b>\"i\"</span></p>\n\n<p><b>解释:</b></p>\n\n<p>唯一的子字符串为&nbsp;<code>\"mxz\"</code>&nbsp;<code>12 + 23 + 25 = 60</code>&nbsp;<code>60 % 26 = 8</code>&nbsp;<code>result[0] = 'i'</code>&nbsp;。</p>\n</div>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= k &lt;= 100</code></li>\n\t<li><code>k &lt;= s.length &lt;= 1000</code></li>\n\t<li><code>s.length</code>&nbsp;能被 <code>k</code>&nbsp;整除。</li>\n\t<li><code>s</code> 只含有小写英文字母。</li>\n</ul>\n",
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"Use a for loop to find <code>hashedChar</code> of each substring.",
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