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            "title": "Can Make Palindrome from Substring",
            "titleSlug": "can-make-palindrome-from-substring",
            "content": "<p>You are given a string <code>s</code> and array <code>queries</code> where <code>queries[i] = [left<sub>i</sub>, right<sub>i</sub>, k<sub>i</sub>]</code>. We may rearrange the substring <code>s[left<sub>i</sub>...right<sub>i</sub>]</code> for each query and then choose up to <code>k<sub>i</sub></code> of them to replace with any lowercase English letter.</p>\n\n<p>If the substring is possible to be a palindrome string after the operations above, the result of the query is <code>true</code>. Otherwise, the result is <code>false</code>.</p>\n\n<p>Return a boolean array <code>answer</code> where <code>answer[i]</code> is the result of the <code>i<sup>th</sup></code> query <code>queries[i]</code>.</p>\n\n<p>Note that each letter is counted individually for replacement, so if, for example <code>s[left<sub>i</sub>...right<sub>i</sub>] = &quot;aaa&quot;</code>, and <code>k<sub>i</sub> = 2</code>, we can only replace two of the letters. Also, note that no query modifies the initial string <code>s</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example :</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;abcda&quot;, queries = [[3,3,0],[1,2,0],[0,3,1],[0,3,2],[0,4,1]]\n<strong>Output:</strong> [true,false,false,true,true]\n<strong>Explanation:</strong>\nqueries[0]: substring = &quot;d&quot;, is palidrome.\nqueries[1]: substring = &quot;bc&quot;, is not palidrome.\nqueries[2]: substring = &quot;abcd&quot;, is not palidrome after replacing only 1 character.\nqueries[3]: substring = &quot;abcd&quot;, could be changed to &quot;abba&quot; which is palidrome. Also this can be changed to &quot;baab&quot; first rearrange it &quot;bacd&quot; then replace &quot;cd&quot; with &quot;ab&quot;.\nqueries[4]: substring = &quot;abcda&quot;, could be changed to &quot;abcba&quot; which is palidrome.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = &quot;lyb&quot;, queries = [[0,1,0],[2,2,1]]\n<strong>Output:</strong> [false,true]\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= s.length, queries.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>0 &lt;= left<sub>i</sub> &lt;= right<sub>i</sub> &lt; s.length</code></li>\n\t<li><code>0 &lt;= k<sub>i</sub> &lt;= s.length</code></li>\n\t<li><code>s</code> consists of lowercase English letters.</li>\n</ul>\n",
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            "exampleTestcases": "\"abcda\"\n[[3,3,0],[1,2,0],[0,3,1],[0,3,2],[0,4,1]]\n\"lyb\"\n[[0,1,0],[2,2,1]]",
            "categoryTitle": "Algorithms",
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                    "name": "Hash Table",
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                    "lang": "C++",
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                    "code": "class Solution {\npublic:\n    vector<bool> canMakePaliQueries(string s, vector<vector<int>>& queries) {\n        \n    }\n};",
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                    "lang": "Java",
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                    "code": "class Solution {\n    public List<Boolean> canMakePaliQueries(String s, int[][] queries) {\n        \n    }\n}",
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                    "lang": "Python",
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                    "code": "class Solution(object):\n    def canMakePaliQueries(self, s, queries):\n        \"\"\"\n        :type s: str\n        :type queries: List[List[int]]\n        :rtype: List[bool]\n        \"\"\"\n        ",
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                    "lang": "Python3",
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                    "code": "class Solution:\n    def canMakePaliQueries(self, s: str, queries: List[List[int]]) -> List[bool]:\n        ",
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                    "lang": "C",
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                    "code": "\n\n/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nbool* canMakePaliQueries(char * s, int** queries, int queriesSize, int* queriesColSize, int* returnSize){\n\n}",
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                    "lang": "C#",
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                    "code": "public class Solution {\n    public IList<bool> CanMakePaliQueries(string s, int[][] queries) {\n        \n    }\n}",
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                    "lang": "JavaScript",
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                    "code": "/**\n * @param {string} s\n * @param {number[][]} queries\n * @return {boolean[]}\n */\nvar canMakePaliQueries = function(s, queries) {\n    \n};",
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                    "lang": "Ruby",
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                    "code": "# @param {String} s\n# @param {Integer[][]} queries\n# @return {Boolean[]}\ndef can_make_pali_queries(s, queries)\n    \nend",
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                    "code": "class Solution {\n    func canMakePaliQueries(_ s: String, _ queries: [[Int]]) -> [Bool] {\n        \n    }\n}",
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                    "lang": "Go",
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                    "code": "func canMakePaliQueries(s string, queries [][]int) []bool {\n    \n}",
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                    "lang": "Scala",
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                    "code": "object Solution {\n    def canMakePaliQueries(s: String, queries: Array[Array[Int]]): List[Boolean] = {\n        \n    }\n}",
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                    "lang": "Kotlin",
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                    "code": "class Solution {\n    fun canMakePaliQueries(s: String, queries: Array<IntArray>): List<Boolean> {\n        \n    }\n}",
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                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "impl Solution {\n    pub fn can_make_pali_queries(s: String, queries: Vec<Vec<i32>>) -> Vec<bool> {\n        \n    }\n}",
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                    "lang": "PHP",
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                    "code": "class Solution {\n\n    /**\n     * @param String $s\n     * @param Integer[][] $queries\n     * @return Boolean[]\n     */\n    function canMakePaliQueries($s, $queries) {\n        \n    }\n}",
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                    "lang": "TypeScript",
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                    "code": "function canMakePaliQueries(s: string, queries: number[][]): boolean[] {\n\n};",
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                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec can_make_pali_queries(S :: unicode:unicode_binary(), Queries :: [[integer()]]) -> [boolean()].\ncan_make_pali_queries(S, Queries) ->\n  .",
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                    "lang": "Elixir",
                    "langSlug": "elixir",
                    "code": "defmodule Solution do\n  @spec can_make_pali_queries(s :: String.t, queries :: [[integer]]) :: [boolean]\n  def can_make_pali_queries(s, queries) do\n\n  end\nend",
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            "hints": [
                "Since we can rearrange the substring, all we care about is the frequency of each character in that substring.",
                "How to find the character frequencies efficiently ?",
                "As a preprocess, calculate the accumulate frequency of all characters for all prefixes of the string.",
                "How to check if a substring can be changed to a palindrome given its characters frequency ?",
                "Count the number of odd frequencies, there can be at most one odd frequency in a palindrome."
            ],
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