{ "data": { "question": { "questionId": "1945", "questionFrontendId": "1817", "categoryTitle": "Algorithms", "boundTopicId": 694936, "title": "Finding the Users Active Minutes", "titleSlug": "finding-the-users-active-minutes", "content": "

You are given the logs for users' actions on LeetCode, and an integer k. The logs are represented by a 2D integer array logs where each logs[i] = [IDi, timei] indicates that the user with IDi performed an action at the minute timei.

\n\n

Multiple users can perform actions simultaneously, and a single user can perform multiple actions in the same minute.

\n\n

The user active minutes (UAM) for a given user is defined as the number of unique minutes in which the user performed an action on LeetCode. A minute can only be counted once, even if multiple actions occur during it.

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You are to calculate a 1-indexed array answer of size k such that, for each j (1 <= j <= k), answer[j] is the number of users whose UAM equals j.

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Return the array answer as described above.

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\n

Example 1:

\n\n
\nInput: logs = [[0,5],[1,2],[0,2],[0,5],[1,3]], k = 5\nOutput: [0,2,0,0,0]\nExplanation:\nThe user with ID=0 performed actions at minutes 5, 2, and 5 again. Hence, they have a UAM of 2 (minute 5 is only counted once).\nThe user with ID=1 performed actions at minutes 2 and 3. Hence, they have a UAM of 2.\nSince both users have a UAM of 2, answer[2] is 2, and the remaining answer[j] values are 0.\n
\n\n

Example 2:

\n\n
\nInput: logs = [[1,1],[2,2],[2,3]], k = 4\nOutput: [1,1,0,0]\nExplanation:\nThe user with ID=1 performed a single action at minute 1. Hence, they have a UAM of 1.\nThe user with ID=2 performed actions at minutes 2 and 3. Hence, they have a UAM of 2.\nThere is one user with a UAM of 1 and one with a UAM of 2.\nHence, answer[1] = 1, answer[2] = 1, and the remaining values are 0.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "查找用户活跃分钟数", "translatedContent": "

给你用户在 LeetCode 的操作日志,和一个整数 k 。日志用一个二维整数数组 logs 表示,其中每个 logs[i] = [IDi, timei] 表示 ID 为 IDi 的用户在 timei 分钟时执行了某个操作。

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多个用户 可以同时执行操作,单个用户可以在同一分钟内执行 多个操作

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指定用户的 用户活跃分钟数(user active minutes,UAM) 定义为用户对 LeetCode 执行操作的 唯一分钟数 。 即使一分钟内执行多个操作,也只能按一分钟计数。

\n\n

请你统计用户活跃分钟数的分布情况,统计结果是一个长度为 k下标从 1 开始计数 的数组 answer ,对于每个 j1 <= j <= k),answer[j] 表示 用户活跃分钟数 等于 j 的用户数。

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返回上面描述的答案数组 answer

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示例 1:

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\n输入:logs = [[0,5],[1,2],[0,2],[0,5],[1,3]], k = 5\n输出:[0,2,0,0,0]\n解释:\nID=0 的用户执行操作的分钟分别是:5 、2 和 5 。因此,该用户的用户活跃分钟数为 2(分钟 5 只计数一次)\nID=1 的用户执行操作的分钟分别是:2 和 3 。因此,该用户的用户活跃分钟数为 2\n2 个用户的用户活跃分钟数都是 2 ,answer[2] 为 2 ,其余 answer[j] 的值都是 0\n
\n\n

示例 2:

\n\n
\n输入:logs = [[1,1],[2,2],[2,3]], k = 4\n输出:[1,1,0,0]\n解释:\nID=1 的用户仅在分钟 1 执行单个操作。因此,该用户的用户活跃分钟数为 1\nID=2 的用户执行操作的分钟分别是:2 和 3 。因此,该用户的用户活跃分钟数为 2\n1 个用户的用户活跃分钟数是 1 ,1 个用户的用户活跃分钟数是 2 \n因此,answer[1] = 1 ,answer[2] = 1 ,其余的值都是 0\n
\n\n

 

\n\n

提示:

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(listof exact-integer?))\n )", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec finding_users_active_minutes(Logs :: [[integer()]], K :: integer()) -> [integer()].\nfinding_users_active_minutes(Logs, K) ->\n .", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "code": "defmodule Solution do\n @spec finding_users_active_minutes(logs :: [[integer]], k :: integer) :: [integer]\n def finding_users_active_minutes(logs, k) do\n \n end\nend", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"25K\", \"totalSubmission\": \"31.5K\", \"totalAcceptedRaw\": 24969, \"totalSubmissionRaw\": 31465, \"acRate\": \"79.4%\"}", "hints": [ "Try to find the number of different minutes when action happened for each user.", "For each user increase the value of the answer array index which matches the UAM for this user." ], "solution": null, "status": null, "sampleTestCase": "[[0,5],[1,2],[0,2],[0,5],[1,3]]\n5", "metaData": "{\n \"name\": \"findingUsersActiveMinutes\",\n \"params\": [\n {\n \"name\": \"logs\",\n \"type\": \"integer[][]\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"k\"\n }\n ],\n \"return\": {\n \"type\": \"integer[]\"\n }\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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