Question: make a program in c++ that indicates how far/close the array is from being sorted. if array is already sorted then inversion count is 0

make a program in c++ that indicates how far/close the array is from being sorted. if array is already sorted then inversion count is 0

Example:

input array: [8, 4, 2, 1]

Output: 6

1) write pseudocode for a divide and conquer algorithm to compute inversion count of an input array

2) write recurrence relation of pseudocode as T(n) and solve it using substitution, iteration or master theorem

3) Write full program in c++. program must be in log n time

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