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Median is the middle value in an ordered integer list. If the size of the list is even, there
is no middle value. So the median is the mean of the two middle value.
For example,
[2,3,4]
, the median is 3
[2,3]
, the median is (2 + 3) / 2 = 2.5
Design a data structure that supports the following two operations:
- void addNum(int num) - Add a integer number from the data stream to the data
structure.
- double findMedian() - Return the median of all elements so far.
Example:
addNum(1)
addNum(2)
findMedian() -> 1.5
addNum(3)
findMedian() -> 2
Follow up:
- If all integer numbers from the stream are between 0 and 100, how would you
optimize it?
- If 99% of all integer numbers from the stream are between 0 and 100, how would you
optimize it?
Difficulty:
Hard
Lock:
Normal
All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.