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"question": {
"questionId": "1747",
"questionFrontendId": "1625",
"categoryTitle": "Algorithms",
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"title": "Lexicographically Smallest String After Applying Operations",
"titleSlug": "lexicographically-smallest-string-after-applying-operations",
"content": "<p>You are given a string <code>s</code> of <strong>even length</strong> consisting of digits from <code>0</code> to <code>9</code>, and two integers <code>a</code> and <code>b</code>.</p>\n\n<p>You can apply either of the following two operations any number of times and in any order on <code>s</code>:</p>\n\n<ul>\n\t<li>Add <code>a</code> to all odd indices of <code>s</code> <strong>(0-indexed)</strong>. Digits post <code>9</code> are cycled back to <code>0</code>. For example, if <code>s = &quot;3456&quot;</code> and <code>a = 5</code>, <code>s</code> becomes <code>&quot;3951&quot;</code>.</li>\n\t<li>Rotate <code>s</code> to the right by <code>b</code> positions. For example, if <code>s = &quot;3456&quot;</code> and <code>b = 1</code>, <code>s</code> becomes <code>&quot;6345&quot;</code>.</li>\n</ul>\n\n<p>Return <em>the <strong>lexicographically smallest</strong> string you can obtain by applying the above operations any number of times on</em> <code>s</code>.</p>\n\n<p>A string <code>a</code> is lexicographically smaller than a string <code>b</code> (of the same length) if in the first position where <code>a</code> and <code>b</code> differ, string <code>a</code> has a letter that appears earlier in the alphabet than the corresponding letter in <code>b</code>. For example, <code>&quot;0158&quot;</code> is lexicographically smaller than <code>&quot;0190&quot;</code> because the first position they differ is at the third letter, and <code>&#39;5&#39;</code> comes before <code>&#39;9&#39;</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;5525&quot;, a = 9, b = 2\n<strong>Output:</strong> &quot;2050&quot;\n<strong>Explanation:</strong> We can apply the following operations:\nStart: &quot;5525&quot;\nRotate: &quot;2555&quot;\nAdd: &quot;2454&quot;\nAdd: &quot;2353&quot;\nRotate: &quot;5323&quot;\nAdd: &quot;5222&quot;\nAdd: &quot;5121&quot;\nRotate: &quot;2151&quot;\nAdd: &quot;2050&quot;\nThere is no way to obtain a string that is lexicographically smaller than &quot;2050&quot;.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;74&quot;, a = 5, b = 1\n<strong>Output:</strong> &quot;24&quot;\n<strong>Explanation:</strong> We can apply the following operations:\nStart: &quot;74&quot;\nRotate: &quot;47&quot;\nAdd: &quot;42&quot;\nRotate: &quot;24&quot;\nThere is no way to obtain a string that is lexicographically smaller than &quot;24&quot;.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;0011&quot;, a = 4, b = 2\n<strong>Output:</strong> &quot;0011&quot;\n<strong>Explanation:</strong> There are no sequence of operations that will give us a lexicographically smaller string than &quot;0011&quot;.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>2 &lt;= s.length &lt;= 100</code></li>\n\t<li><code>s.length</code> is even.</li>\n\t<li><code>s</code> consists of digits from <code>0</code> to <code>9</code> only.</li>\n\t<li><code>1 &lt;= a &lt;= 9</code></li>\n\t<li><code>1 &lt;= b &lt;= s.length - 1</code></li>\n</ul>\n",
"translatedTitle": "执行操作后字典序最小的字符串",
"translatedContent": "<p>给你一个字符串 <code>s</code> 以及两个整数 <code>a</code> 和 <code>b</code> 。其中,字符串 <code>s</code> 的长度为偶数,且仅由数字 <code>0</code> 到 <code>9</code> 组成。</p>\n\n<p>你可以在 <code>s</code> 上按任意顺序多次执行下面两个操作之一:</p>\n\n<ul>\n\t<li>累加:将&nbsp; <code>a</code> 加到 <code>s</code> 中所有下标为奇数的元素上(<strong>下标从 0 开始</strong>)。数字一旦超过 <code>9</code> 就会变成 <code>0</code>,如此循环往复。例如,<code>s = \"3456\"</code> 且 <code>a = 5</code>,则执行此操作后 <code>s</code> 变成 <code>\"3951\"</code>。</li>\n\t<li>轮转:将 <code>s</code> 向右轮转 <code>b</code> 位。例如,<code>s = \"3456\"</code> 且 <code>b = 1</code>,则执行此操作后 <code>s</code> 变成 <code>\"6345\"</code>。</li>\n</ul>\n\n<p>请你返回在 <code>s</code> 上执行上述操作任意次后可以得到的 <strong>字典序最小</strong> 的字符串。</p>\n\n<p>如果两个字符串长度相同,那么字符串 <code>a</code> 字典序比字符串 <code>b</code> 小可以这样定义:在 <code>a</code> 和 <code>b</code> 出现不同的第一个位置上,字符串 <code>a</code> 中的字符出现在字母表中的时间早于 <code>b</code> 中的对应字符。例如,<code>\"0158”</code> 字典序比 <code>\"0190\"</code> 小,因为不同的第一个位置是在第三个字符,显然 <code>'5'</code> 出现在 <code>'9'</code> 之前。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \"5525\", a = 9, b = 2\n<strong>输出:</strong>\"2050\"\n<strong>解释:</strong>执行操作如下:\n初态\"5525\"\n轮转\"2555\"\n累加\"2454\"\n累加\"2353\"\n轮转\"5323\"\n累加\"5222\"\n累加\"5121\"\n轮转\"2151\"\n累加\"2050\"\n无法获得字典序小于 \"2050\" 的字符串。\n</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \"74\", a = 5, b = 1\n<strong>输出:</strong>\"24\"\n<strong>解释:</strong>执行操作如下:\n初态\"74\"\n轮转\"47\"\n累加\"42\"\n轮转\"24\"\n无法获得字典序小于 \"24\" 的字符串。\n</pre>\n\n<p><strong>示例 3</strong></p>\n\n<pre>\n<strong>输入:</strong>s = \"0011\", a = 4, b = 2\n<strong>输出:</strong>\"0011\"\n<strong>解释:</strong>无法获得字典序小于 \"0011\" 的字符串。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>2 &lt;= s.length &lt;= 100</code></li>\n\t<li><code>s.length</code> 是偶数</li>\n\t<li><code>s</code> 仅由数字 <code>0</code> 到 <code>9</code> 组成</li>\n\t<li><code>1 &lt;= a &lt;= 9</code></li>\n\t<li><code>1 &lt;= b &lt;= s.length - 1</code></li>\n</ul>\n",
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"You can generate all possible sequences and take their minimum.",
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