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Maximum value of difference of a pair of elements and their Index
Medium Accuracy: 64.31% Submissions: 5722 Points: 4

Given an array arr[] of N positive integers. Find maximum value of |arr[i] – arr[j]| + |i – j|, (0 <= i, j <= N – 1)

Example 1:

Input:
N = 4
arr[] = {1, 2, 3, 1}
Output:
4
Explanation:
Choosing i=0 and j=2, will result in
|1-3|+|0-2| = 4, which is the maximum
possible value.


Example 2:

Input:
N = 3
A[] = {1, 1, 1}
Output:
2
Explanation:
Choosing i=0 and j=2, will result in
|1-1|+|0-2| = 2, which is the maximum
possible value.

You don't need to read input or print anything. Your task is to complete the function maxValue() which takes an Integer N and an array arr of size N as input and returns the maximum possoble value of |arr[i] – arr[j]| + |i – j|.

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)

Constraints:
1 <= N <= 105
0 <= arr[i] <= 105

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