mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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175 lines
18 KiB
JSON
175 lines
18 KiB
JSON
{
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"question": {
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"questionId": "2715",
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"questionFrontendId": "2600",
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"boundTopicId": null,
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"title": "K Items With the Maximum Sum",
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"titleSlug": "k-items-with-the-maximum-sum",
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"content": "<p>There is a bag that consists of items, each item has a number <code>1</code>, <code>0</code>, or <code>-1</code> written on it.</p>\n\n<p>You are given four <strong>non-negative </strong>integers <code>numOnes</code>, <code>numZeros</code>, <code>numNegOnes</code>, and <code>k</code>.</p>\n\n<p>The bag initially contains:</p>\n\n<ul>\n\t<li><code>numOnes</code> items with <code>1</code>s written on them.</li>\n\t<li><code>numZeroes</code> items with <code>0</code>s written on them.</li>\n\t<li><code>numNegOnes</code> items with <code>-1</code>s written on them.</li>\n</ul>\n\n<p>We want to pick exactly <code>k</code> items among the available items. Return <em>the <strong>maximum</strong> possible sum of numbers written on the items</em>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> numOnes = 3, numZeros = 2, numNegOnes = 0, k = 2\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> We have a bag of items with numbers written on them {1, 1, 1, 0, 0}. We take 2 items with 1 written on them and get a sum in a total of 2.\nIt can be proven that 2 is the maximum possible sum.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> numOnes = 3, numZeros = 2, numNegOnes = 0, k = 4\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> We have a bag of items with numbers written on them {1, 1, 1, 0, 0}. We take 3 items with 1 written on them, and 1 item with 0 written on it, and get a sum in a total of 3.\nIt can be proven that 3 is the maximum possible sum.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 <= numOnes, numZeros, numNegOnes <= 50</code></li>\n\t<li><code>0 <= k <= numOnes + numZeros + numNegOnes</code></li>\n</ul>\n",
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"difficulty": "Easy",
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"likes": 250,
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"exampleTestcases": "3\n2\n0\n2\n3\n2\n0\n4",
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"categoryTitle": "Algorithms",
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"code": "class Solution(object):\n def kItemsWithMaximumSum(self, numOnes, numZeros, numNegOnes, k):\n \"\"\"\n :type numOnes: int\n :type numZeros: int\n :type numNegOnes: int\n :type k: int\n :rtype: int\n \"\"\"\n ",
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"code": "public class Solution {\n public int KItemsWithMaximumSum(int numOnes, int numZeros, int numNegOnes, int k) {\n \n }\n}",
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"code": "/**\n * @param {number} numOnes\n * @param {number} numZeros\n * @param {number} numNegOnes\n * @param {number} k\n * @return {number}\n */\nvar kItemsWithMaximumSum = function(numOnes, numZeros, numNegOnes, k) {\n \n};",
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"code": "class Solution {\n\n /**\n * @param Integer $numOnes\n * @param Integer $numZeros\n * @param Integer $numNegOnes\n * @param Integer $k\n * @return Integer\n */\n function kItemsWithMaximumSum($numOnes, $numZeros, $numNegOnes, $k) {\n \n }\n}",
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"code": "class Solution {\n func kItemsWithMaximumSum(_ numOnes: Int, _ numZeros: Int, _ numNegOnes: Int, _ k: Int) -> Int {\n \n }\n}",
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"code": "class Solution {\n fun kItemsWithMaximumSum(numOnes: Int, numZeros: Int, numNegOnes: Int, k: Int): Int {\n \n }\n}",
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"lang": "Go",
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"code": "func kItemsWithMaximumSum(numOnes int, numZeros int, numNegOnes int, k int) int {\n \n}",
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"lang": "Ruby",
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"code": "# @param {Integer} num_ones\n# @param {Integer} num_zeros\n# @param {Integer} num_neg_ones\n# @param {Integer} k\n# @return {Integer}\ndef k_items_with_maximum_sum(num_ones, num_zeros, num_neg_ones, k)\n \nend",
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{
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"lang": "Scala",
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"code": "object Solution {\n def kItemsWithMaximumSum(numOnes: Int, numZeros: Int, numNegOnes: Int, 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 k_items_with_maximum_sum(num_ones: i32, num_zeros: i32, num_neg_ones: i32, k: i32) -> i32 {\n \n }\n}",
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"code": "(define/contract (k-items-with-maximum-sum numOnes numZeros numNegOnes k)\n (-> exact-integer? exact-integer? exact-integer? exact-integer? exact-integer?)\n\n )",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec k_items_with_maximum_sum(NumOnes :: integer(), NumZeros :: integer(), NumNegOnes :: integer(), K :: integer()) -> integer().\nk_items_with_maximum_sum(NumOnes, NumZeros, NumNegOnes, K) ->\n .",
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"lang": "Elixir",
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"code": "defmodule Solution do\n @spec k_items_with_maximum_sum(num_ones :: integer, num_zeros :: integer, num_neg_ones :: integer, k :: integer) :: integer\n def k_items_with_maximum_sum(num_ones, num_zeros, num_neg_ones, k) do\n\n end\nend",
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"hints": [
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"It is always optimal to take items with the number 1 written on them as much as possible.",
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"If k > numOnes, after taking all items with the number 1, it is always optimal to take items with the number 0 written on them as much as possible.",
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"If k > numOnes + numZeroes we are forced to take k - numOnes - numZeroes -1s."
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"sampleTestCase": "3\n2\n0\n2",
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