mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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186 lines
18 KiB
JSON
186 lines
18 KiB
JSON
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"questionId": "2834",
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"questionFrontendId": "2766",
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"boundTopicId": null,
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"title": "Relocate Marbles",
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"titleSlug": "relocate-marbles",
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"content": "<p>You are given a <strong>0-indexed</strong> integer array <code>nums</code> representing the initial positions of some marbles. You are also given two <strong>0-indexed </strong>integer arrays <code>moveFrom</code> and <code>moveTo</code> of <strong>equal</strong> length.</p>\n\n<p>Throughout <code>moveFrom.length</code> steps, you will change the positions of the marbles. On the <code>i<sup>th</sup></code> step, you will move <strong>all</strong> marbles at position <code>moveFrom[i]</code> to position <code>moveTo[i]</code>.</p>\n\n<p>After completing all the steps, return <em>the sorted list of <strong>occupied</strong> positions</em>.</p>\n\n<p><strong>Notes:</strong></p>\n\n<ul>\n\t<li>We call a position <strong>occupied</strong> if there is at least one marble in that position.</li>\n\t<li>There may be multiple marbles in a single position.</li>\n</ul>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,6,7,8], moveFrom = [1,7,2], moveTo = [2,9,5]\n<strong>Output:</strong> [5,6,8,9]\n<strong>Explanation:</strong> Initially, the marbles are at positions 1,6,7,8.\nAt the i = 0th step, we move the marbles at position 1 to position 2. Then, positions 2,6,7,8 are occupied.\nAt the i = 1st step, we move the marbles at position 7 to position 9. Then, positions 2,6,8,9 are occupied.\nAt the i = 2nd step, we move the marbles at position 2 to position 5. Then, positions 5,6,8,9 are occupied.\nAt the end, the final positions containing at least one marbles are [5,6,8,9].</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,1,3,3], moveFrom = [1,3], moveTo = [2,2]\n<strong>Output:</strong> [2]\n<strong>Explanation:</strong> Initially, the marbles are at positions [1,1,3,3].\nAt the i = 0th step, we move all the marbles at position 1 to position 2. Then, the marbles are at positions [2,2,3,3].\nAt the i = 1st step, we move all the marbles at position 3 to position 2. Then, the marbles are at positions [2,2,2,2].\nSince 2 is the only occupied position, we return [2].\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= nums.length <= 10<sup>5</sup></code></li>\n\t<li><code>1 <= moveFrom.length <= 10<sup>5</sup></code></li>\n\t<li><code>moveFrom.length == moveTo.length</code></li>\n\t<li><code>1 <= nums[i], moveFrom[i], moveTo[i] <= 10<sup>9</sup></code></li>\n\t<li>The test cases are generated such that there is at least a marble in <code>moveFrom[i]</code> at the moment we want to apply the <code>i<sup>th</sup></code> move.</li>\n</ul>\n",
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"difficulty": "Medium",
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"exampleTestcases": "[1,6,7,8]\n[1,7,2]\n[2,9,5]\n[1,1,3,3]\n[1,3]\n[2,2]",
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"categoryTitle": "Algorithms",
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"code": "class Solution {\npublic:\n vector<int> relocateMarbles(vector<int>& nums, vector<int>& moveFrom, vector<int>& moveTo) {\n \n }\n};",
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"code": "class Solution {\n public List<Integer> relocateMarbles(int[] nums, int[] moveFrom, int[] moveTo) {\n \n }\n}",
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"code": "class Solution(object):\n def relocateMarbles(self, nums, moveFrom, moveTo):\n \"\"\"\n :type nums: List[int]\n :type moveFrom: List[int]\n :type moveTo: List[int]\n :rtype: List[int]\n \"\"\"\n ",
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"code": "class Solution:\n def relocateMarbles(self, nums: List[int], moveFrom: List[int], moveTo: List[int]) -> List[int]:\n ",
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"code": "/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nint* relocateMarbles(int* nums, int numsSize, int* moveFrom, int moveFromSize, int* moveTo, int moveToSize, int* returnSize){\n\n}",
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"code": "public class Solution {\n public IList<int> RelocateMarbles(int[] nums, int[] moveFrom, int[] moveTo) {\n \n }\n}",
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"code": "/**\n * @param {number[]} nums\n * @param {number[]} moveFrom\n * @param {number[]} moveTo\n * @return {number[]}\n */\nvar relocateMarbles = function(nums, moveFrom, moveTo) {\n \n};",
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"code": "function relocateMarbles(nums: number[], moveFrom: number[], moveTo: number[]): number[] {\n\n};",
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"code": "class Solution {\n\n /**\n * @param Integer[] $nums\n * @param Integer[] $moveFrom\n * @param Integer[] $moveTo\n * @return Integer[]\n */\n function relocateMarbles($nums, $moveFrom, $moveTo) {\n \n }\n}",
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"code": "class Solution {\n func relocateMarbles(_ nums: [Int], _ moveFrom: [Int], _ moveTo: [Int]) -> [Int] {\n \n }\n}",
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"code": "class Solution {\n fun relocateMarbles(nums: IntArray, moveFrom: IntArray, moveTo: IntArray): List<Int> {\n \n }\n}",
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"code": "class Solution {\n List<int> relocateMarbles(List<int> nums, List<int> moveFrom, List<int> moveTo) {\n\n }\n}",
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"lang": "Go",
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"code": "func relocateMarbles(nums []int, moveFrom []int, moveTo []int) []int {\n \n}",
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"code": "# @param {Integer[]} nums\n# @param {Integer[]} move_from\n# @param {Integer[]} move_to\n# @return {Integer[]}\ndef relocate_marbles(nums, move_from, move_to)\n \nend",
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"code": "object Solution {\n def relocateMarbles(nums: Array[Int], moveFrom: Array[Int], moveTo: Array[Int]): List[Int] = {\n \n }\n}",
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"code": "impl Solution {\n pub fn relocate_marbles(nums: Vec<i32>, move_from: Vec<i32>, move_to: Vec<i32>) -> Vec<i32> {\n \n }\n}",
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"code": "(define/contract (relocate-marbles nums moveFrom moveTo)\n (-> (listof exact-integer?) (listof exact-integer?) (listof exact-integer?) (listof exact-integer?))\n\n )",
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"code": "-spec relocate_marbles(Nums :: [integer()], MoveFrom :: [integer()], MoveTo :: [integer()]) -> [integer()].\nrelocate_marbles(Nums, MoveFrom, MoveTo) ->\n .",
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"code": "defmodule Solution do\n @spec relocate_marbles(nums :: [integer], move_from :: [integer], move_to :: [integer]) :: [integer]\n def relocate_marbles(nums, move_from, move_to) do\n\n end\nend",
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"Can we solve this problem using a set or map?",
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"Sequentially process pairs from moveFrom[i] and moveTo[i]. In each step, remove the occurrence of moveFrom[i] and add moveTo[i] into the set."
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