java.lang.Object
g0901_1000.s0914_x_of_a_kind_in_a_deck_of_cards.Solution

public class Solution extends Object
914 - X of a Kind in a Deck of Cards.<p>Easy</p> <p>In a deck of cards, each card has an integer written on it.</p> <p>Return <code>true</code> if and only if you can choose <code>X >= 2</code> such that it is possible to split the entire deck into 1 or more groups of cards, where:</p> <ul> <li>Each group has exactly <code>X</code> cards.</li> <li>All the cards in each group have the same integer.</li> </ul> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> deck = [1,2,3,4,4,3,2,1]</p> <p><strong>Output:</strong> true</p> <p><strong>Explanation:</strong> Possible partition [1,1],[2,2],[3,3],[4,4].</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> deck = [1,1,1,2,2,2,3,3]</p> <p><strong>Output:</strong> false</p> <p><strong>Explanation:</strong> No possible partition.</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= deck.length <= 10<sup>4</sup></code></li> <li><code>0 <= deck[i] < 10<sup>4</sup></code></li> </ul>
  • Constructor Details

    • Solution

      public Solution()
  • Method Details

    • hasGroupsSizeX

      public boolean hasGroupsSizeX(int[] deck)