{ "data": { "question": { "questionId": "917", "questionFrontendId": "881", "boundTopicId": null, "title": "Boats to Save People", "titleSlug": "boats-to-save-people", "content": "<p>You are given an array <code>people</code> where <code>people[i]</code> is the weight of the <code>i<sup>th</sup></code> person, and an <strong>infinite number of boats</strong> where each boat can carry a maximum weight of <code>limit</code>. Each boat carries at most two people at the same time, provided the sum of the weight of those people is at most <code>limit</code>.</p>\n\n<p>Return <em>the minimum number of boats to carry every given person</em>.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> people = [1,2], limit = 3\n<strong>Output:</strong> 1\n<strong>Explanation:</strong> 1 boat (1, 2)\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> people = [3,2,2,1], limit = 3\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> 3 boats (1, 2), (2) and (3)\n</pre>\n\n<p><strong>Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> people = [3,5,3,4], limit = 5\n<strong>Output:</strong> 4\n<strong>Explanation:</strong> 4 boats (3), (3), (4), (5)\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= people.length <= 5 * 10<sup>4</sup></code></li>\n\t<li><code>1 <= people[i] <= limit <= 3 * 10<sup>4</sup></code></li>\n</ul>\n", "translatedTitle": null, "translatedContent": null, "isPaidOnly": false, "difficulty": "Medium", "likes": 2903, "dislikes": 76, "isLiked": null, "similarQuestions": "[]", "exampleTestcases": "[1,2]\n3\n[3,2,2,1]\n3\n[3,5,3,4]\n5", "categoryTitle": "Algorithms", "contributors": [], "topicTags": [ { "name": "Array", "slug": "array", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Two Pointers", "slug": "two-pointers", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Greedy", "slug": "greedy", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Sorting", "slug": "sorting", "translatedName": null, "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": [ { "lang": "C++", "langSlug": "cpp", "code": "class Solution {\npublic:\n int numRescueBoats(vector<int>& people, int limit) {\n \n }\n};", "__typename": "CodeSnippetNode" }, { "lang": "Java", "langSlug": "java", "code": "class Solution {\n public int numRescueBoats(int[] people, int limit) {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "code": "class Solution(object):\n def numRescueBoats(self, people, limit):\n \"\"\"\n :type people: List[int]\n :type limit: int\n :rtype: int\n \"\"\"\n ", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "code": "class Solution:\n def numRescueBoats(self, people: List[int], limit: int) -> int:\n ", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "\n\nint numRescueBoats(int* people, int peopleSize, int limit){\n\n}", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "code": "public class Solution {\n public int NumRescueBoats(int[] people, int limit) {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "/**\n * @param {number[]} people\n * @param {number} limit\n * @return {number}\n */\nvar numRescueBoats = function(people, limit) {\n \n};", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "code": "# @param {Integer[]} people\n# @param {Integer} limit\n# @return {Integer}\ndef num_rescue_boats(people, limit)\n \nend", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "code": "class Solution {\n func numRescueBoats(_ people: [Int], _ limit: Int) -> Int {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "func numRescueBoats(people []int, limit int) int {\n \n}", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "code": "object Solution {\n def numRescueBoats(people: Array[Int], limit: Int): Int = {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class Solution {\n fun numRescueBoats(people: IntArray, limit: Int): Int {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "code": "impl Solution {\n pub fn num_rescue_boats(people: Vec<i32>, limit: i32) -> i32 {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "code": "class Solution {\n\n /**\n * @param Integer[] $people\n * @param Integer $limit\n * @return Integer\n */\n function numRescueBoats($people, $limit) {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "code": "function numRescueBoats(people: number[], limit: number): number {\n\n};", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "code": "(define/contract (num-rescue-boats people limit)\n (-> (listof exact-integer?) exact-integer? exact-integer?)\n\n )", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec num_rescue_boats(People :: [integer()], Limit :: integer()) -> integer().\nnum_rescue_boats(People, Limit) ->\n .", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "code": "defmodule Solution do\n @spec num_rescue_boats(people :: [integer], limit :: integer) :: integer\n def num_rescue_boats(people, limit) do\n\n end\nend", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"138.8K\", \"totalSubmission\": \"264.7K\", \"totalAcceptedRaw\": 138798, \"totalSubmissionRaw\": 264672, \"acRate\": \"52.4%\"}", "hints": [], "solution": { "id": "525", "canSeeDetail": true, "paidOnly": false, "hasVideoSolution": false, "paidOnlyVideo": true, "__typename": "ArticleNode" }, "status": null, "sampleTestCase": "[1,2]\n3", "metaData": "{\r\n \"name\": \"numRescueBoats\",\r\n \"params\": [\r\n {\r\n \"name\": \"people\",\r\n \"type\": \"integer[]\"\r\n },\r\n {\r\n \"name\": \"limit\",\r\n \"type\": \"integer\"\r\n }\r\n ],\r\n \"return\": {\r\n \"type\": \"integer\"\r\n }\r\n}\r\n", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "enableTestMode": false, "enableDebugger": true, "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>. 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