mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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174 lines
16 KiB
JSON
174 lines
16 KiB
JSON
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"questionFrontendId": "2248",
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"boundTopicId": null,
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"title": "Intersection of Multiple Arrays",
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"titleSlug": "intersection-of-multiple-arrays",
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"content": "Given a 2D integer array <code>nums</code> where <code>nums[i]</code> is a non-empty array of <strong>distinct</strong> positive integers, return <em>the list of integers that are present in <strong>each array</strong> of</em> <code>nums</code><em> sorted in <strong>ascending order</strong></em>.\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [[<u><strong>3</strong></u>,1,2,<u><strong>4</strong></u>,5],[1,2,<u><strong>3</strong></u>,<u><strong>4</strong></u>],[<u><strong>3</strong></u>,<u><strong>4</strong></u>,5,6]]\n<strong>Output:</strong> [3,4]\n<strong>Explanation:</strong> \nThe only integers present in each of nums[0] = [<u><strong>3</strong></u>,1,2,<u><strong>4</strong></u>,5], nums[1] = [1,2,<u><strong>3</strong></u>,<u><strong>4</strong></u>], and nums[2] = [<u><strong>3</strong></u>,<u><strong>4</strong></u>,5,6] are 3 and 4, so we return [3,4].</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [[1,2,3],[4,5,6]]\n<strong>Output:</strong> []\n<strong>Explanation:</strong> \nThere does not exist any integer present both in nums[0] and nums[1], so we return an empty list [].\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= nums.length <= 1000</code></li>\n\t<li><code>1 <= sum(nums[i].length) <= 1000</code></li>\n\t<li><code>1 <= nums[i][j] <= 1000</code></li>\n\t<li>All the values of <code>nums[i]</code> are <strong>unique</strong>.</li>\n</ul>\n",
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"difficulty": "Easy",
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"exampleTestcases": "[[3,1,2,4,5],[1,2,3,4],[3,4,5,6]]\n[[1,2,3],[4,5,6]]",
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"categoryTitle": "Algorithms",
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"name": "Array",
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"slug": "array",
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"name": "Hash Table",
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"slug": "hash-table",
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"name": "Counting",
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"slug": "counting",
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"langSlug": "cpp",
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"code": "class Solution {\npublic:\n vector<int> intersection(vector<vector<int>>& nums) {\n \n }\n};",
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"lang": "Java",
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"langSlug": "java",
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"code": "class Solution {\n public List<Integer> intersection(int[][] nums) {\n \n }\n}",
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"lang": "Python",
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"langSlug": "python",
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"code": "class Solution(object):\n def intersection(self, nums):\n \"\"\"\n :type nums: List[List[int]]\n :rtype: List[int]\n \"\"\"\n ",
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"code": "class Solution:\n def intersection(self, nums: List[List[int]]) -> List[int]:\n ",
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"code": "\n\n/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nint* intersection(int** nums, int numsSize, int* numsColSize, int* returnSize){\n\n}",
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"lang": "C#",
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"langSlug": "csharp",
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"code": "public class Solution {\n public IList<int> Intersection(int[][] nums) {\n \n }\n}",
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @param {number[][]} nums\n * @return {number[]}\n */\nvar intersection = function(nums) {\n \n};",
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "# @param {Integer[][]} nums\n# @return {Integer[]}\ndef intersection(nums)\n \nend",
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"lang": "Swift",
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"langSlug": "swift",
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"code": "class Solution {\n func intersection(_ nums: [[Int]]) -> [Int] {\n \n }\n}",
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"lang": "Go",
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"langSlug": "golang",
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"code": "func intersection(nums [][]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 intersection(nums: Array[Array[Int]]): List[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 intersection(nums: Array<IntArray>): List<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 intersection(nums: Vec<Vec<i32>>) -> Vec<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 Integer[][] $nums\n * @return Integer[]\n */\n function intersection($nums) {\n \n }\n}",
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "function intersection(nums: number[][]): number[] {\n\n};",
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"langSlug": "racket",
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"code": "(define/contract (intersection nums)\n (-> (listof (listof exact-integer?)) (listof exact-integer?))\n\n )",
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"langSlug": "erlang",
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"code": "-spec intersection(Nums :: [[integer()]]) -> [integer()].\nintersection(Nums) ->\n .",
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"code": "defmodule Solution do\n @spec intersection(nums :: [[integer]]) :: [integer]\n def intersection(nums) do\n\n end\nend",
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"hints": [
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"Keep a count of the number of times each integer occurs in nums.",
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"Since all integers of nums[i] are distinct, if an integer is present in each array, its count will be equal to the total number of arrays."
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"metaData": "{\n \"name\": \"intersection\",\n \"params\": [\n {\n \"name\": \"nums\",\n \"type\": \"integer[][]\"\n }\n ],\n \"return\": {\n \"type\": \"list<integer>\"\n }\n}",
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