Alice has some number of cards and she wants to rearrange those cards into groups so that each group is of size groupSize and consists of groupSize consecutive cards.
Given an integer array hand where hand[i] is the value written on the ith card and an integer groupSize, return true if she can rearrange the cards, or false otherwise.
Input: hand = [1, 2, 3, 6, 2, 3, 4, 7, 8], groupSize = 3 Output: true Explanation: Groups are [1, 2, 3], [2, 3, 4], and [6, 7, 8].
Input: hand = [1, 2, 3, 4, 5], groupSize = 4 Output: false Explanation: len(hand) = 5 is not divisible by groupSize = 4, so grouping is impossible.
hand = [1, 2, 3, 6, 2, 3, 4, 7, 8], groupSize = 3