{ "data": { "question": { "questionId": "2479", "questionFrontendId": "2402", "categoryTitle": "Algorithms", "boundTopicId": 1793493, "title": "Meeting Rooms III", "titleSlug": "meeting-rooms-iii", "content": "
You are given an integer n
. There are n
rooms numbered from 0
to n - 1
.
You are given a 2D integer array meetings
where meetings[i] = [starti, endi]
means that a meeting will be held during the half-closed time interval [starti, endi)
. All the values of starti
are unique.
Meetings are allocated to rooms in the following manner:
\n\nReturn the number of the room that held the most meetings. If there are multiple rooms, return the room with the lowest number.
\n\nA half-closed interval [a, b)
is the interval between a
and b
including a
and not including b
.
\n
Example 1:
\n\n\nInput: n = 2, meetings = [[0,10],[1,5],[2,7],[3,4]]\nOutput: 0\nExplanation:\n- At time 0, both rooms are not being used. The first meeting starts in room 0.\n- At time 1, only room 1 is not being used. The second meeting starts in room 1.\n- At time 2, both rooms are being used. The third meeting is delayed.\n- At time 3, both rooms are being used. The fourth meeting is delayed.\n- At time 5, the meeting in room 1 finishes. The third meeting starts in room 1 for the time period [5,10).\n- At time 10, the meetings in both rooms finish. The fourth meeting starts in room 0 for the time period [10,11).\nBoth rooms 0 and 1 held 2 meetings, so we return 0. \n\n\n
Example 2:
\n\n\nInput: n = 3, meetings = [[1,20],[2,10],[3,5],[4,9],[6,8]]\nOutput: 1\nExplanation:\n- At time 1, all three rooms are not being used. The first meeting starts in room 0.\n- At time 2, rooms 1 and 2 are not being used. The second meeting starts in room 1.\n- At time 3, only room 2 is not being used. The third meeting starts in room 2.\n- At time 4, all three rooms are being used. The fourth meeting is delayed.\n- At time 5, the meeting in room 2 finishes. The fourth meeting starts in room 2 for the time period [5,10).\n- At time 6, all three rooms are being used. The fifth meeting is delayed.\n- At time 10, the meetings in rooms 1 and 2 finish. The fifth meeting starts in room 1 for the time period [10,12).\nRoom 0 held 1 meeting while rooms 1 and 2 each held 2 meetings, so we return 1. \n\n\n
\n
Constraints:
\n\n1 <= n <= 100
1 <= meetings.length <= 105
meetings[i].length == 2
0 <= starti < endi <= 5 * 105
starti
are unique.给你一个整数 n
,共有编号从 0
到 n - 1
的 n
个会议室。
给你一个二维整数数组 meetings
,其中 meetings[i] = [starti, endi]
表示一场会议将会在 半闭 时间区间 [starti, endi)
举办。所有 starti
的值 互不相同 。
会议将会按以下方式分配给会议室:
\n\n返回举办最多次会议的房间 编号 。如果存在多个房间满足此条件,则返回编号 最小 的房间。
\n\n半闭区间 [a, b)
是 a
和 b
之间的区间,包括 a
但 不包括 b
。
\n\n
示例 1:
\n\n输入:n = 2, meetings = [[0,10],[1,5],[2,7],[3,4]]\n输出:0\n解释:\n- 在时间 0 ,两个会议室都未占用,第一场会议在会议室 0 举办。\n- 在时间 1 ,只有会议室 1 未占用,第二场会议在会议室 1 举办。\n- 在时间 2 ,两个会议室都被占用,第三场会议延期举办。\n- 在时间 3 ,两个会议室都被占用,第四场会议延期举办。\n- 在时间 5 ,会议室 1 的会议结束。第三场会议在会议室 1 举办,时间周期为 [5,10) 。\n- 在时间 10 ,两个会议室的会议都结束。第四场会议在会议室 0 举办,时间周期为 [10,11) 。\n会议室 0 和会议室 1 都举办了 2 场会议,所以返回 0 。 \n\n\n
示例 2:
\n\n输入:n = 3, meetings = [[1,20],[2,10],[3,5],[4,9],[6,8]]\n输出:1\n解释:\n- 在时间 1 ,所有三个会议室都未占用,第一场会议在会议室 0 举办。\n- 在时间 2 ,会议室 1 和 2 未占用,第二场会议在会议室 1 举办。\n- 在时间 3 ,只有会议室 2 未占用,第三场会议在会议室 2 举办。\n- 在时间 4 ,所有三个会议室都被占用,第四场会议延期举办。 \n- 在时间 5 ,会议室 2 的会议结束。第四场会议在会议室 2 举办,时间周期为 [5,10) 。\n- 在时间 6 ,所有三个会议室都被占用,第五场会议延期举办。 \n- 在时间 10 ,会议室 1 和 2 的会议结束。第五场会议在会议室 1 举办,时间周期为 [10,12) 。 \n会议室 1 和会议室 2 都举办了 2 场会议,所以返回 1 。 \n\n\n
\n\n
提示:
\n\n1 <= n <= 100
1 <= meetings.length <= 105
meetings[i].length == 2
0 <= starti < endi <= 5 * 105
starti
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