Oddsway

In a pendulum arrangement the elements of an array are arranged in a way such that their sorting traversal resembles the sway of a pendulum. For instance, Given elements: {5, 3, 7, 2, 1} Sorted order: {1, 2, 3, 5, 7} Pendulum arrangement: {5, 2, 1, 3, 7} A pendulum arrangement is said to be an odd sway if every element in the odd position (1 – indexing is assumed) of the arrangement sums up to som