is the input array sorted??? because in editoial it is assumed that it is sorted i guess…how can we do it for non sorted array
In optimal game strategy 1
No the array is not sorted.
At each instance we would need to consider two possibilities that we can pick the first as well as the last element of the remaining array. Both these possibilities give rise to two more possibilities depending on the other player. Since the second player plays optimally and try to minimise our score. So overall we have two possibilities at each instance.
For the first possibility , where we could pick the first element , the other player will pick the next element from the side that would minimise our total score.
Similarly , for the second possibility , where we can pick the last element , the other player would still pick the next element from the side that would minimise our total score.
We entertain both these cases and take the maximum result of the two and return that result.
We take two pointer variables , say ‘i’ and ‘j’ which each represent the starting and the ending point of the remaining array currently in consideration. We work till the two pointers cross each other
refer to below code : - https://ide.codingblocks.com/s/282455
does this solution works only for a sorted array??
what if the array is unsorted
This works for unsorted array as well