mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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180 lines
18 KiB
JSON
180 lines
18 KiB
JSON
{
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"question": {
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"questionId": "2134",
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"questionFrontendId": "2024",
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"boundTopicId": null,
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"title": "Maximize the Confusion of an Exam",
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"titleSlug": "maximize-the-confusion-of-an-exam",
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"content": "<p>A teacher is writing a test with <code>n</code> true/false questions, with <code>'T'</code> denoting true and <code>'F'</code> denoting false. He wants to confuse the students by <strong>maximizing</strong> the number of <strong>consecutive</strong> questions with the <strong>same</strong> answer (multiple trues or multiple falses in a row).</p>\n\n<p>You are given a string <code>answerKey</code>, where <code>answerKey[i]</code> is the original answer to the <code>i<sup>th</sup></code> question. In addition, you are given an integer <code>k</code>, the maximum number of times you may perform the following operation:</p>\n\n<ul>\n\t<li>Change the answer key for any question to <code>'T'</code> or <code>'F'</code> (i.e., set <code>answerKey[i]</code> to <code>'T'</code> or <code>'F'</code>).</li>\n</ul>\n\n<p>Return <em>the <strong>maximum</strong> number of consecutive</em> <code>'T'</code>s or <code>'F'</code>s <em>in the answer key after performing the operation at most</em> <code>k</code> <em>times</em>.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> answerKey = "TTFF", k = 2\n<strong>Output:</strong> 4\n<strong>Explanation:</strong> We can replace both the 'F's with 'T's to make answerKey = "<u>TTTT</u>".\nThere are four consecutive 'T's.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> answerKey = "TFFT", k = 1\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> We can replace the first 'T' with an 'F' to make answerKey = "<u>FFF</u>T".\nAlternatively, we can replace the second 'T' with an 'F' to make answerKey = "T<u>FFF</u>".\nIn both cases, there are three consecutive 'F's.\n</pre>\n\n<p><strong>Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> answerKey = "TTFTTFTT", k = 1\n<strong>Output:</strong> 5\n<strong>Explanation:</strong> We can replace the first 'F' to make answerKey = "<u>TTTTT</u>FTT"\nAlternatively, we can replace the second 'F' to make answerKey = "TTF<u>TTTTT</u>". \nIn both cases, there are five consecutive 'T's.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>n == answerKey.length</code></li>\n\t<li><code>1 <= n <= 5 * 10<sup>4</sup></code></li>\n\t<li><code>answerKey[i]</code> is either <code>'T'</code> or <code>'F'</code></li>\n\t<li><code>1 <= k <= n</code></li>\n</ul>\n",
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"difficulty": "Medium",
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"exampleTestcases": "\"TTFF\"\n2\n\"TFFT\"\n1\n\"TTFTTFTT\"\n1",
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"categoryTitle": "Algorithms",
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"code": "class Solution(object):\n def maxConsecutiveAnswers(self, answerKey, k):\n \"\"\"\n :type answerKey: str\n :type k: int\n :rtype: int\n \"\"\"\n ",
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"code": "# @param {String} answer_key\n# @param {Integer} k\n# @return {Integer}\ndef max_consecutive_answers(answer_key, k)\n \nend",
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"code": "class Solution {\n fun maxConsecutiveAnswers(answerKey: String, k: Int): Int {\n \n }\n}",
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"code": "impl Solution {\n pub fn max_consecutive_answers(answer_key: String, k: i32) -> i32 {\n \n }\n}",
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"code": "function maxConsecutiveAnswers(answerKey: string, k: number): number {\n\n};",
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"code": "-spec max_consecutive_answers(AnswerKey :: unicode:unicode_binary(), K :: integer()) -> integer().\nmax_consecutive_answers(AnswerKey, K) ->\n .",
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"code": "defmodule Solution do\n @spec max_consecutive_answers(answer_key :: String.t, k :: integer) :: integer\n def max_consecutive_answers(answer_key, k) do\n\n end\nend",
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"hints": [
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"Can we use the maximum length at the previous position to help us find the answer for the current position?",
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"Can we use binary search to find the maximum consecutive same answer at every position?"
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],
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"solution": null,
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"sampleTestCase": "\"TTFF\"\n2",
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