X

DAYS

:

HOUR

:

MINS

:

SEC

Copied to Clipboard
Find median in a stream
Hard Accuracy: 51.38% Submissions: 24270 Points: 8

Given an input stream of N integers. The task is to insert these numbers into a new stream and find the median of the stream formed by each insertion of X to the new stream.

Example 1:

Input:
N = 4
X[] = 5,15,1,3
Output:
5
10
5
4
Explanation:Flow in stream : 5, 15, 1, 3
5 goes to stream --> median 5 (5)
15 goes to stream --> median 10 (5,15)
1 goes to stream --> median 5 (5,15,1)
3 goes to stream --> median 4 (5,15,1 3)


Example 2:

Input:
N = 3
X[] = 5,10,15
Output:
5
7.5
10
Explanation:Flow in stream : 5, 10, 15
5 goes to stream --> median 5 (5)
10 goes to stream --> median 7.5 (5,10)
15 goes to stream --> median 10 (5,10,15)

You are required to complete the class Solution.
It should have 2 data members to represent 2 heaps.
It should have the following member functions:
1. insertHeap() which takes as input and inserts it into the heap, the function should then call balanceHeaps() to balance the new heap.
2. balanceHeaps() does not take any arguments. It is supposed to balance the two heaps.
3. getMedian() does not take any arguments. It should return the current median of the stream.

Expected Time Complexity : O(nlogn)
Expected Auxilliary Space : O(n)

Constraints:
1 <= N <= 106
1 <= x <= 106

to report an issue on this page.

Editorial

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?