150強訪談簡單

會議室二

「會議室 II」問題的詳細指南和 Python 實作。

問題陳述

簡單

給定一個會議時間間隔數組,其中 Intervals[i] = [starti, endi],找出所需的最小會議室數量。

寫一個函數 minMeetingRooms(intervals: List[List[int]]) -> int

約束條件
  • 0 <= len(intervals) <= 10^4
  • intervals[i].length == 2
  • 0 <= starti < endi <= 10^6

範例

Example 1
Input
intervals = [[0,30],[5,10],[15,20]]
Output
2
Explanation

Room 1: [0,30], Room 2: [5,10], [15,20].

Example 2
Input
intervals = [[7,10],[2,4]]
Output
1
Explanation

Meetings do not overlap.

Need a Hint?
考慮使用特定於間隔的資料結構,例如集合或堆。
Edge Cases to Watch
  • 空輸入結構
  • 單元素輸入
  • 大數值範圍

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