mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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176 lines
19 KiB
JSON
176 lines
19 KiB
JSON
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"questionFrontendId": "3375",
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"title": "Minimum Operations to Make Array Values Equal to K",
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"titleSlug": "minimum-operations-to-make-array-values-equal-to-k",
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"content": "<p>You are given an integer array <code>nums</code> and an integer <code>k</code>.</p>\n\n<p>An integer <code>h</code> is called <strong>valid</strong> if all values in the array that are <strong>strictly greater</strong> than <code>h</code> are <em>identical</em>.</p>\n\n<p>For example, if <code>nums = [10, 8, 10, 8]</code>, a <strong>valid</strong> integer is <code>h = 9</code> because all <code>nums[i] > 9</code> are equal to 10, but 5 is not a <strong>valid</strong> integer.</p>\n\n<p>You are allowed to perform the following operation on <code>nums</code>:</p>\n\n<ul>\n\t<li>Select an integer <code>h</code> that is <em>valid</em> for the <strong>current</strong> values in <code>nums</code>.</li>\n\t<li>For each index <code>i</code> where <code>nums[i] > h</code>, set <code>nums[i]</code> to <code>h</code>.</li>\n</ul>\n\n<p>Return the <strong>minimum</strong> number of operations required to make every element in <code>nums</code> <strong>equal</strong> to <code>k</code>. If it is impossible to make all elements equal to <code>k</code>, return -1.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [5,2,5,4,5], k = 2</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">2</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The operations can be performed in order using valid integers 4 and then 2.</p>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [2,1,2], k = 2</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">-1</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>It is impossible to make all the values equal to 2.</p>\n</div>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [9,7,5,3], k = 1</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">4</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The operations can be performed using valid integers in the order 7, 5, 3, and 1.</p>\n</div>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= nums.length <= 100 </code></li>\n\t<li><code>1 <= nums[i] <= 100</code></li>\n\t<li><code>1 <= k <= 100</code></li>\n</ul>\n",
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"translatedContent": null,
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"difficulty": "Easy",
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"exampleTestcases": "[5,2,5,4,5]\n2\n[2,1,2]\n2\n[9,7,5,3]\n1",
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"categoryTitle": "Algorithms",
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"code": "class Solution {\npublic:\n int minOperations(vector<int>& nums, int k) {\n \n }\n};",
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"code": "class Solution(object):\n def minOperations(self, nums, k):\n \"\"\"\n :type nums: List[int]\n :type k: int\n :rtype: int\n \"\"\"\n ",
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"code": "/**\n * @param {number[]} nums\n * @param {number} k\n * @return {number}\n */\nvar minOperations = function(nums, k) {\n \n};",
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "function minOperations(nums: number[], k: number): number {\n \n};",
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"code": "class Solution {\n\n /**\n * @param Integer[] $nums\n * @param Integer $k\n * @return Integer\n */\n function minOperations($nums, $k) {\n \n }\n}",
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"code": "class Solution {\n fun minOperations(nums: IntArray, k: Int): Int {\n \n }\n}",
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"lang": "Dart",
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"code": "class Solution {\n int minOperations(List<int> nums, int k) {\n \n }\n}",
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"code": "# @param {Integer[]} nums\n# @param {Integer} k\n# @return {Integer}\ndef min_operations(nums, k)\n \nend",
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"code": "object Solution {\n def minOperations(nums: Array[Int], k: Int): Int = {\n \n }\n}",
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"code": "impl Solution {\n pub fn min_operations(nums: Vec<i32>, k: i32) -> i32 {\n \n }\n}",
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"code": "defmodule Solution do\n @spec min_operations(nums :: [integer], k :: integer) :: integer\n def min_operations(nums, k) do\n \n end\nend",
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"hints": [
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"Handle the case when the array contains an integer less than <code>k</code>",
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"Start by performing operations on the highest integer",
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"You can perform an operation on the highest integer using the second-highest, an operation on the second-highest using the third-highest, and so forth.",
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"The answer is the number of distinct integers in the array that are larger than <code>k</code>."
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