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# Maximum Unsorted Subarray

Problem Description

Given an array A of non-negative integers of size N. Find the minimum sub-array Al, Al+1 ,..., Ar such that if we sort(in ascending order) that sub-array, then the whole array should get sorted. If A is already sorted, output -1.

Problem Constraints

1 <= N <= 1000000
1 <= A[i] <= 1000000

Input Format

First and only argument is an array of non-negative integers of size N.

Output Format

Return an array of length two where the first element denotes the starting index(0-based) and the second element denotes the ending index(0-based) of the sub-array. If the array is already sorted, return an array containing only one element i.e. -1.

Example Input

Input 1:

`A = [1, 3, 2, 4, 5]`

Input 2:

`A = [1, 2, 3, 4, 5]`

Example Output

Output 1:

`[1, 2]`

Output 2:

`[-1]`

Example Explanation

Explanation 1:

`If we sort the sub-array A1, A2, then the whole array A gets sorted.`

Explanation 2:

`A is already sorted.`

NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a question? Checkout Sample Codes for more details.
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