Given a sequence of numbers ‘ARR’. Your task is to return a sorted sequence of ‘ARR’ in non-descending order with help of the merge sort algorithm.

Example :

Given a string ‘str’ and a string ‘pat’. The string s has some wildcard characters i.e ‘?’ and ‘*’.

If any character is a ‘?’ we can replace that character with any other character. 

If a char...

Ninja is given a task to implement a priority queue using Heap data structure. The Ninja is busying preparing for the tournament., So he asked for your help.