leetcode-problemset/leetcode-cn/originData/count-substrings-that-differ-by-one-character.json

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        "question": {
            "questionId": "1743",
            "questionFrontendId": "1638",
            "categoryTitle": "Algorithms",
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            "title": "Count Substrings That Differ by One Character",
            "titleSlug": "count-substrings-that-differ-by-one-character",
            "content": "<p>Given two strings <code>s</code> and <code>t</code>, find the number of ways you can choose a non-empty substring of <code>s</code> and replace a <strong>single character</strong> by a different character such that the resulting substring is a substring of <code>t</code>. In other words, find the number of substrings in <code>s</code> that differ from some substring in <code>t</code> by <strong>exactly</strong> one character.</p>\n\n<p>For example, the underlined substrings in <code>&quot;<u>compute</u>r&quot;</code> and <code>&quot;<u>computa</u>tion&quot;</code> only differ by the <code>&#39;e&#39;</code>/<code>&#39;a&#39;</code>, so this is a valid way.</p>\n\n<p>Return <em>the number of substrings that satisfy the condition above.</em></p>\n\n<p>A <strong>substring</strong> is a contiguous sequence of characters within a string.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;aba&quot;, t = &quot;baba&quot;\n<strong>Output:</strong> 6\n<strong>Explanation:</strong> The following are the pairs of substrings from s and t that differ by exactly 1 character:\n(&quot;<u>a</u>ba&quot;, &quot;<u>b</u>aba&quot;)\n(&quot;<u>a</u>ba&quot;, &quot;ba<u>b</u>a&quot;)\n(&quot;ab<u>a</u>&quot;, &quot;<u>b</u>aba&quot;)\n(&quot;ab<u>a</u>&quot;, &quot;ba<u>b</u>a&quot;)\n(&quot;a<u>b</u>a&quot;, &quot;b<u>a</u>ba&quot;)\n(&quot;a<u>b</u>a&quot;, &quot;bab<u>a</u>&quot;)\nThe underlined portions are the substrings that are chosen from s and t.\n</pre>\n​​<strong class=\"example\">Example 2:</strong>\n\n<pre>\n<strong>Input:</strong> s = &quot;ab&quot;, t = &quot;bb&quot;\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> The following are the pairs of substrings from s and t that differ by 1 character:\n(&quot;<u>a</u>b&quot;, &quot;<u>b</u>b&quot;)\n(&quot;<u>a</u>b&quot;, &quot;b<u>b</u>&quot;)\n(&quot;<u>ab</u>&quot;, &quot;<u>bb</u>&quot;)\n​​​​The underlined portions are the substrings that are chosen from s and t.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length, t.length &lt;= 100</code></li>\n\t<li><code>s</code> and <code>t</code> consist of lowercase English letters only.</li>\n</ul>\n",
            "translatedTitle": "统计只差一个字符的子串数目",
            "translatedContent": "<p>给你两个字符串&nbsp;<code>s</code> 和&nbsp;<code>t</code>&nbsp;，请你找出 <code>s</code>&nbsp;中的非空子串的数目，这些子串满足替换 <strong>一个不同字符</strong>&nbsp;以后，是 <code>t</code>&nbsp;串的子串。换言之，请你找到 <code>s</code>&nbsp;和 <code>t</code>&nbsp;串中 <strong>恰好</strong>&nbsp;只有一个字符不同的子字符串对的数目。</p>\n\n<p>比方说，&nbsp;<code>\"<u>compute</u>r\"</code>&nbsp;and&nbsp;<code>\"<u>computa</u>tion\"&nbsp;</code>只有一个字符不同：&nbsp;<code>'e'</code>/<code>'a'</code>&nbsp;，所以这一对子字符串会给答案加 1 。</p>\n\n<p>请你返回满足上述条件的不同子字符串对数目。</p>\n\n<p>一个 <strong>子字符串</strong>&nbsp;是一个字符串中连续的字符。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<b>输入：</b>s = \"aba\", t = \"baba\"\n<b>输出：</b>6\n<strong>解释：</strong>以下为只相差 1 个字符的 s 和 t 串的子字符串对：\n(\"<strong>a</strong>ba\", \"<strong>b</strong>aba\")\n(\"<strong>a</strong>ba\", \"ba<strong>b</strong>a\")\n(\"ab<strong>a</strong>\", \"<strong>b</strong>aba\")\n(\"ab<strong>a</strong>\", \"ba<strong>b</strong>a\")\n(\"a<strong>b</strong>a\", \"b<strong>a</strong>ba\")\n(\"a<strong>b</strong>a\", \"bab<strong>a</strong>\")\n加粗部分分别表示 s 和 t 串选出来的子字符串。\n</pre>\n<strong>示例 2：</strong>\n\n<pre>\n<b>输入：</b>s = \"ab\", t = \"bb\"\n<b>输出：</b>3\n<strong>解释：</strong>以下为只相差 1 个字符的 s 和 t 串的子字符串对：\n(\"<strong>a</strong>b\", \"<strong>b</strong>b\")\n(\"<strong>a</strong>b\", \"b<strong>b</strong>\")\n(\"<strong>ab</strong>\", \"<strong>bb</strong>\")\n加粗部分分别表示 s 和 t 串选出来的子字符串。\n</pre>\n<strong>示例 3：</strong>\n\n<pre>\n<b>输入：</b>s = \"a\", t = \"a\"\n<b>输出：</b>0\n</pre>\n\n<p><strong>示例 4：</strong></p>\n\n<pre>\n<b>输入：</b>s = \"abe\", t = \"bbc\"\n<b>输出：</b>10\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length, t.length &lt;= 100</code></li>\n\t<li><code>s</code> 和&nbsp;<code>t</code>&nbsp;都只包含小写英文字母。</li>\n</ul>\n",
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                "Take every substring of s, change a character, and see how many substrings of t match that substring.",
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