This problem, also referred to as the “sliding window maximum” problem, can be efficiently solved using heaps. We’ve already discussed an O(n) solution.

Subsequences derived from strings by deleting some or no characters without changing order, are crucial in fields like bioinformatics, data mining, and cryptography.

This method has the limitation that it will work for only those matrix where the first integer of each row is greater than the last integer of the previous row.

Nim’s game is played with a set of heaps, each containing a certain number of objects or stones. Two players take turns removing objects from the heaps