mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
181 lines
17 KiB
JSON
181 lines
17 KiB
JSON
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"question": {
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"questionId": "2599",
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"questionFrontendId": "2516",
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"boundTopicId": null,
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"title": "Take K of Each Character From Left and Right",
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"titleSlug": "take-k-of-each-character-from-left-and-right",
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"content": "<p>You are given a string <code>s</code> consisting of the characters <code>'a'</code>, <code>'b'</code>, and <code>'c'</code> and a non-negative integer <code>k</code>. Each minute, you may take either the <strong>leftmost</strong> character of <code>s</code>, or the <strong>rightmost</strong> character of <code>s</code>.</p>\n\n<p>Return<em> the <strong>minimum</strong> number of minutes needed for you to take <strong>at least</strong> </em><code>k</code><em> of each character, or return </em><code>-1</code><em> if it is not possible to take </em><code>k</code><em> of each character.</em></p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = "aabaaaacaabc", k = 2\n<strong>Output:</strong> 8\n<strong>Explanation:</strong> \nTake three characters from the left of s. You now have two 'a' characters, and one 'b' character.\nTake five characters from the right of s. You now have four 'a' characters, two 'b' characters, and two 'c' characters.\nA total of 3 + 5 = 8 minutes is needed.\nIt can be proven that 8 is the minimum number of minutes needed.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = "a", k = 1\n<strong>Output:</strong> -1\n<strong>Explanation:</strong> It is not possible to take one 'b' or 'c' so return -1.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= s.length <= 10<sup>5</sup></code></li>\n\t<li><code>s</code> consists of only the letters <code>'a'</code>, <code>'b'</code>, and <code>'c'</code>.</li>\n\t<li><code>0 <= k <= s.length</code></li>\n</ul>\n",
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"translatedTitle": null,
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"translatedContent": null,
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"difficulty": "Medium",
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"exampleTestcases": "\"aabaaaacaabc\"\n2\n\"a\"\n1",
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"categoryTitle": "Algorithms",
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"langSlug": "cpp",
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"code": "class Solution {\npublic:\n int takeCharacters(string s, int k) {\n \n }\n};",
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"code": "class Solution {\n public int takeCharacters(String s, int k) {\n \n }\n}",
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"lang": "Python",
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"code": "class Solution(object):\n def takeCharacters(self, s, k):\n \"\"\"\n :type s: str\n :type k: int\n :rtype: int\n \"\"\"\n ",
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"code": "class Solution:\n def takeCharacters(self, s: str, k: int) -> int:\n ",
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"lang": "C#",
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"langSlug": "csharp",
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"code": "public class Solution {\n public int TakeCharacters(string s, int k) {\n \n }\n}",
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @param {string} s\n * @param {number} k\n * @return {number}\n */\nvar takeCharacters = function(s, k) {\n \n};",
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "# @param {String} s\n# @param {Integer} k\n# @return {Integer}\ndef take_characters(s, k)\n \nend",
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"lang": "Swift",
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"langSlug": "swift",
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"code": "class Solution {\n func takeCharacters(_ s: String, _ k: Int) -> Int {\n \n }\n}",
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"lang": "Go",
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"langSlug": "golang",
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"code": "func takeCharacters(s string, k int) int {\n \n}",
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"lang": "Scala",
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"langSlug": "scala",
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"code": "object Solution {\n def takeCharacters(s: String, k: Int): Int = {\n \n }\n}",
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class Solution {\n fun takeCharacters(s: String, k: Int): Int {\n \n }\n}",
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"lang": "Rust",
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"langSlug": "rust",
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"code": "impl Solution {\n pub fn take_characters(s: String, k: i32) -> i32 {\n \n }\n}",
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"lang": "PHP",
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"langSlug": "php",
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"code": "class Solution {\n\n /**\n * @param String $s\n * @param Integer $k\n * @return Integer\n */\n function takeCharacters($s, $k) {\n \n }\n}",
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "function takeCharacters(s: string, k: number): number {\n\n};",
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"lang": "Racket",
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"langSlug": "racket",
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"code": "(define/contract (take-characters s k)\n (-> string? exact-integer? exact-integer?)\n\n )",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec take_characters(S :: unicode:unicode_binary(), K :: integer()) -> integer().\ntake_characters(S, K) ->\n .",
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"langSlug": "elixir",
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"code": "defmodule Solution do\n @spec take_characters(s :: String.t, k :: integer) :: integer\n def take_characters(s, k) do\n\n end\nend",
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"langSlug": "dart",
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"code": "class Solution {\n int takeCharacters(String s, int k) {\n\n }\n}",
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"stats": "{\"totalAccepted\": \"8.2K\", \"totalSubmission\": \"25.2K\", \"totalAcceptedRaw\": 8180, \"totalSubmissionRaw\": 25234, \"acRate\": \"32.4%\"}",
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"hints": [
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"Start by counting the frequency of each character and checking if it is possible.",
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"If you take x characters from the left side, what is the minimum number of characters you need to take from the right side? Find this for all values of x in the range 0 ≤ x ≤ s.length.",
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"Use a two-pointers approach to avoid computing the same information multiple times."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "\"aabaaaacaabc\"\n2",
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"metaData": "{\n \"name\": \"takeCharacters\",\n \"params\": [\n {\n \"name\": \"s\",\n \"type\": \"string\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"k\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n }\n}",
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"envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 17 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\"], \"java\": [\"Java\", \"<p><code>OpenJDK 17</code>. Java 8 features such as lambda expressions and stream API can be used. </p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>\"], \"python\": [\"Python\", \"<p><code>Python 2.7.12</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/2/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/2/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/2/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\\r\\n\\r\\n<p>Note that Python 2.7 <a href=\\\"https://www.python.org/dev/peps/pep-0373/\\\" target=\\\"_blank\\\">will not be maintained past 2020</a>. For the latest Python, please choose Python3 instead.</p>\"], \"c\": [\"C\", \"<p>Compiled with <code>gcc 8.2</code> using the gnu11 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level one optimization (<code>-O1</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n\\r\\n<p>For hash table operations, you may use <a href=\\\"https://troydhanson.github.io/uthash/\\\" target=\\\"_blank\\\">uthash</a>. \\\"uthash.h\\\" is included by default. Below are some examples:</p>\\r\\n\\r\\n<p><b>1. Adding an item to a hash.</b>\\r\\n<pre>\\r\\nstruct hash_entry {\\r\\n int id; /* we'll use this field as the key */\\r\\n char name[10];\\r\\n UT_hash_handle hh; /* makes this structure hashable */\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>2. Looking up an item in a hash:</b>\\r\\n<pre>\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n struct hash_entry *s;\\r\\n HASH_FIND_INT(users, &user_id, s);\\r\\n return s;\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>3. Deleting an item in a hash:</b>\\r\\n<pre>\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n</pre>\\r\\n</p>\"], \"csharp\": [\"C#\", \"<p><a href=\\\"https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-10\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></p>\"], \"javascript\": [\"JavaScript\", \"<p><code>Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES6 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\\r\\n\\r\\n<p>For Priority Queue / Queue data structures, you may use 5.3.0 version of <a href=\\\"https://github.com/datastructures-js/priority-queue/tree/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and 4.2.1 version of <a href=\\\"https://githu
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