0914. X of a Kind in a Deck of Cards
https://leetcode.com/problems/x-of-a-kind-in-a-deck-of-cards
Description
In a deck of cards, each card has an integer written on it.
Return true
if and only if you can choose X >= 2
such that it is possible to split the entire deck into 1 or more groups of cards, where:
Each group has exactly
X
cards.All the cards in each group have the same integer.
Example 1:
**Input:** deck = [1,2,3,4,4,3,2,1]
**Output:** true
**Explanation**: Possible partition [1,1],[2,2],[3,3],[4,4].
Example 2:
**Input:** deck = [1,1,1,2,2,2,3,3]
**Output:** false
**Explanation**: No possible partition.
Example 3:
**Input:** deck = [1]
**Output:** false
**Explanation**: No possible partition.
Example 4:
**Input:** deck = [1,1]
**Output:** true
**Explanation**: Possible partition [1,1].
Example 5:
**Input:** deck = [1,1,2,2,2,2]
**Output:** true
**Explanation**: Possible partition [1,1],[2,2],[2,2].
Constraints:
1 <= deck.length <= 104
0 <= deck[i] < 104
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