Maximum Unsorted Subarray Interviewbit Solution

Problem: Maximum Unsorted Subarray

Problem Description:

You are given an array (zero indexed) of N non-negative integers, A0, A1 ,…, AN-1.

Find the minimum sub array Al, Al+1 ,…, Ar so if we sort(in ascending order) that sub array, then the whole array should get sorted.

If A is already sorted, output -1.

Example :

Input 1:
 
 A = [1, 3, 2, 4, 5]
 
 Return: [1, 2]

Input 2:
 
 A = [1, 2, 3, 4, 5]
 
 Return: [-1]

In the above example(Input 1), if we sort the subarray A1, A2, then whole array A should get sorted.

Solution: