leetcode-problemset/leetcode/originData/lexicographically-smallest-beautiful-string.json

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            "title": "Lexicographically Smallest Beautiful String",
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            "content": "<p>A string is <strong>beautiful</strong> if:</p>\n\n<ul>\n\t<li>It consists of the first <code>k</code> letters of the English lowercase alphabet.</li>\n\t<li>It does not contain any substring of length <code>2</code> or more which is a palindrome.</li>\n</ul>\n\n<p>You are given a beautiful string <code>s</code> of length <code>n</code> and a positive integer <code>k</code>.</p>\n\n<p>Return <em>the lexicographically smallest string of length </em><code>n</code><em>, which is larger than </em><code>s</code><em> and is <strong>beautiful</strong></em>. If there is no such string, return an empty string.</p>\n\n<p>A string <code>a</code> is lexicographically larger than a string <code>b</code> (of the same length) if in the first position where <code>a</code> and <code>b</code> differ, <code>a</code> has a character strictly larger than the corresponding character in <code>b</code>.</p>\n\n<ul>\n\t<li>For example, <code>&quot;abcd&quot;</code> is lexicographically larger than <code>&quot;abcc&quot;</code> because the first position they differ is at the fourth character, and <code>d</code> is greater than <code>c</code>.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;abcz&quot;, k = 26\n<strong>Output:</strong> &quot;abda&quot;\n<strong>Explanation:</strong> The string &quot;abda&quot; is beautiful and lexicographically larger than the string &quot;abcz&quot;.\nIt can be proven that there is no string that is lexicographically larger than the string &quot;abcz&quot;, beautiful, and lexicographically smaller than the string &quot;abda&quot;.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;dc&quot;, k = 4\n<strong>Output:</strong> &quot;&quot;\n<strong>Explanation:</strong> It can be proven that there is no string that is lexicographically larger than the string &quot;dc&quot; and is beautiful.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= n == s.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>4 &lt;= k &lt;= 26</code></li>\n\t<li><code>s</code> is a beautiful string.</li>\n</ul>\n",
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            "exampleTestcases": "\"abcz\"\n26\n\"dc\"\n4",
            "categoryTitle": "Algorithms",
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                    "lang": "C++",
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                    "code": "class Solution {\npublic:\n    string smallestBeautifulString(string s, int k) {\n        \n    }\n};",
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                    "lang": "Python",
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                    "code": "class Solution(object):\n    def smallestBeautifulString(self, s, k):\n        \"\"\"\n        :type s: str\n        :type k: int\n        :rtype: str\n        \"\"\"\n        ",
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                    "code": "public class Solution {\n    public string SmallestBeautifulString(string s, int k) {\n        \n    }\n}",
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                    "lang": "JavaScript",
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                    "code": "/**\n * @param {string} s\n * @param {number} k\n * @return {string}\n */\nvar smallestBeautifulString = function(s, k) {\n    \n};",
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                    "code": "class Solution {\n\n    /**\n     * @param String $s\n     * @param Integer $k\n     * @return String\n     */\n    function smallestBeautifulString($s, $k) {\n        \n    }\n}",
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                    "code": "class Solution {\n    func smallestBeautifulString(_ s: String, _ k: Int) -> String {\n        \n    }\n}",
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                    "code": "class Solution {\n    fun smallestBeautifulString(s: String, k: Int): String {\n        \n    }\n}",
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                    "code": "class Solution {\n  String smallestBeautifulString(String s, int k) {\n\n  }\n}",
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                    "lang": "Go",
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                    "code": "func smallestBeautifulString(s string, k int) string {\n    \n}",
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                    "code": "# @param {String} s\n# @param {Integer} k\n# @return {String}\ndef smallest_beautiful_string(s, k)\n    \nend",
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                    "code": "impl Solution {\n    pub fn smallest_beautiful_string(s: String, k: i32) -> String {\n        \n    }\n}",
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                    "lang": "Racket",
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                    "code": "(define/contract (smallest-beautiful-string s k)\n  (-> string? exact-integer? string?)\n\n  )",
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                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec smallest_beautiful_string(S :: unicode:unicode_binary(), K :: integer()) -> unicode:unicode_binary().\nsmallest_beautiful_string(S, K) ->\n  .",
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                    "lang": "Elixir",
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                    "code": "defmodule Solution do\n  @spec smallest_beautiful_string(s :: String.t, k :: integer) :: String.t\n  def smallest_beautiful_string(s, k) do\n\n  end\nend",
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            "hints": [
                "If the string does not contain any palindromic substrings of lengths 2 and 3, then the string does not contain any palindromic substrings at all.",
                "Iterate from right to left and if it is possible to increase character at index i without creating any palindromic substrings of lengths 2 and 3, then increase it.",
                "After increasing the character at index i, set every character after index i equal to character a. With this, we will ensure that we have created a lexicographically larger string than s, which does not contain any palindromes before index i and is lexicographically the smallest.",
                "Finally, we are just left with a case to fix palindromic substrings, which come after index i. This can be done with a similar method mentioned in the second hint."
            ],
            "solution": null,
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            "sampleTestCase": "\"abcz\"\n26",
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