aximum of all sub-arrays of size k in O(nk) time complexity using a deque (double-ended queue). The algorithm can be easily modified to calculate the minimum of all subarrays of size k.  For example,  Input: 2,6,4,8,9,2,4,6,3  k=3  Output: 2, 4, 4, 2, 2, 2, 3 If k is 4 in the above example, what is the maximum number of it

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Take an example of finding the maximum of all sub-arrays of size k in O(nk) time complexity using a deque (double-ended queue). The algorithm can be easily modified to calculate the minimum of all subarrays of size k. 

For example, 

Input: 2,6,4,8,9,2,4,6,3 

k=3 

Output: 2, 4, 4, 2, 2, 2, 3

If k is 4 in the above example, what is the maximum number of items in the deque (double-ended queue) at any point in time?

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