Given an array A of integers, find the maximum of j - i subjected to the constraint of A[i] <= A[j].
First and only argument is an integer array A.
Return an integer denoting the maximum value of j - i;
A = [3, 5, 4, 2]
Maximum value occurs for pair (3, 4).
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.