Given an object with nested objects, this function flattens the object by creating key paths for nested values.
The problem is to find the maximum sum that can be achieved by selecting a subarray of non-adjacent elements from an input array. For example, given the input array [3, 7, 4, 6, 5], the maximum sum that can be achieved is 13, by selecting the subarray [3, 7, 5].
Given an array of integers, this function returns the largest difference between any two elements in the array.
This problem asks the programmer to write a function that takes in an array of integers and returns the sum of the odd numbers in the array. For example, given the input array [1, 2, 3, 4, 5], the function should return 9 (1 + 3 + 5).