leetcode-problemset/leetcode-cn/originData/sum-of-prefix-scores-of-strings.json

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        "question": {
            "questionId": "2494",
            "questionFrontendId": "2416",
            "categoryTitle": "Algorithms",
            "boundTopicId": 1827110,
            "title": "Sum of Prefix Scores of Strings",
            "titleSlug": "sum-of-prefix-scores-of-strings",
            "content": "<p>You are given an array <code>words</code> of size <code>n</code> consisting of <strong>non-empty</strong> strings.</p>\n\n<p>We define the <strong>score</strong> of a string <code>word</code> as the <strong>number</strong> of strings <code>words[i]</code> such that <code>word</code> is a <strong>prefix</strong> of <code>words[i]</code>.</p>\n\n<ul>\n\t<li>For example, if <code>words = [&quot;a&quot;, &quot;ab&quot;, &quot;abc&quot;, &quot;cab&quot;]</code>, then the score of <code>&quot;ab&quot;</code> is <code>2</code>, since <code>&quot;ab&quot;</code> is a prefix of both <code>&quot;ab&quot;</code> and <code>&quot;abc&quot;</code>.</li>\n</ul>\n\n<p>Return <em>an array </em><code>answer</code><em> of size </em><code>n</code><em> where </em><code>answer[i]</code><em> is the <strong>sum</strong> of scores of every <strong>non-empty</strong> prefix of </em><code>words[i]</code>.</p>\n\n<p><strong>Note</strong> that a string is considered as a prefix of itself.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;abc&quot;,&quot;ab&quot;,&quot;bc&quot;,&quot;b&quot;]\n<strong>Output:</strong> [5,4,3,2]\n<strong>Explanation:</strong> The answer for each string is the following:\n- &quot;abc&quot; has 3 prefixes: &quot;a&quot;, &quot;ab&quot;, and &quot;abc&quot;.\n- There are 2 strings with the prefix &quot;a&quot;, 2 strings with the prefix &quot;ab&quot;, and 1 string with the prefix &quot;abc&quot;.\nThe total is answer[0] = 2 + 2 + 1 = 5.\n- &quot;ab&quot; has 2 prefixes: &quot;a&quot; and &quot;ab&quot;.\n- There are 2 strings with the prefix &quot;a&quot;, and 2 strings with the prefix &quot;ab&quot;.\nThe total is answer[1] = 2 + 2 = 4.\n- &quot;bc&quot; has 2 prefixes: &quot;b&quot; and &quot;bc&quot;.\n- There are 2 strings with the prefix &quot;b&quot;, and 1 string with the prefix &quot;bc&quot;.\nThe total is answer[2] = 2 + 1 = 3.\n- &quot;b&quot; has 1 prefix: &quot;b&quot;.\n- There are 2 strings with the prefix &quot;b&quot;.\nThe total is answer[3] = 2.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;abcd&quot;]\n<strong>Output:</strong> [4]\n<strong>Explanation:</strong>\n&quot;abcd&quot; has 4 prefixes: &quot;a&quot;, &quot;ab&quot;, &quot;abc&quot;, and &quot;abcd&quot;.\nEach prefix has a score of one, so the total is answer[0] = 1 + 1 + 1 + 1 = 4.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= words.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 1000</code></li>\n\t<li><code>words[i]</code> consists of lowercase English letters.</li>\n</ul>\n",
            "translatedTitle": "字符串的前缀分数和",
            "translatedContent": "<p>给你一个长度为 <code>n</code> 的数组 <code>words</code> ，该数组由 <strong>非空</strong> 字符串组成。</p>\n\n<p>定义字符串 <code>word</code> 的 <strong>分数</strong> 等于以 <code>word</code> 作为 <strong>前缀</strong> 的 <code>words[i]</code> 的数目。</p>\n\n<ul>\n\t<li>例如，如果 <code>words = [\"a\", \"ab\", \"abc\", \"cab\"]</code> ，那么 <code>\"ab\"</code> 的分数是 <code>2</code> ，因为 <code>\"ab\"</code> 是 <code>\"ab\"</code> 和 <code>\"abc\"</code> 的一个前缀。</li>\n</ul>\n\n<p>返回一个长度为<em> </em><code>n</code> 的数组<em> </em><code>answer</code><em> </em>，其中<em> </em><code>answer[i]</code><em> </em>是<em>&nbsp;</em><code>words[i]</code> 的每个非空前缀的分数 <strong>总和</strong> <em>。</em></p>\n\n<p><strong>注意：</strong>字符串视作它自身的一个前缀。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><strong>输入：</strong>words = [\"abc\",\"ab\",\"bc\",\"b\"]\n<strong>输出：</strong>[5,4,3,2]\n<strong>解释：</strong>对应每个字符串的答案如下：\n- \"abc\" 有 3 个前缀：\"a\"、\"ab\" 和 \"abc\" 。\n- 2 个字符串的前缀为 \"a\" ，2 个字符串的前缀为 \"ab\" ，1 个字符串的前缀为 \"abc\" 。\n总计 answer[0] = 2 + 2 + 1 = 5 。\n- \"ab\" 有 2 个前缀：\"a\" 和 \"ab\" 。\n- 2 个字符串的前缀为 \"a\" ，2 个字符串的前缀为 \"ab\" 。\n总计 answer[1] = 2 + 2 = 4 。\n- \"bc\" 有 2 个前缀：\"b\" 和 \"bc\" 。\n- 2 个字符串的前缀为 \"b\" ，1 个字符串的前缀为 \"bc\" 。 \n总计 answer[2] = 2 + 1 = 3 。\n- \"b\" 有 1 个前缀：\"b\"。\n- 2 个字符串的前缀为 \"b\" 。\n总计 answer[3] = 2 。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><strong>输入：</strong>words = [\"abcd\"]\n<strong>输出：</strong>[4]\n<strong>解释：</strong>\n\"abcd\" 有 4 个前缀 \"a\"、\"ab\"、\"abc\" 和 \"abcd\"。\n每个前缀的分数都是 1 ，总计 answer[0] = 1 + 1 + 1 + 1 = 4 。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= words.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 1000</code></li>\n\t<li><code>words[i]</code> 由小写英文字母组成</li>\n</ul>\n",
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            "hints": [
                "What data structure will allow you to efficiently keep track of the score of each prefix?",
                "Use a Trie. Insert all the words into it, and keep a counter at each node that will tell you how many times we have visited each prefix."
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