cpp-flashcards/org/study_deck_02/dsa/greedy/0846-hand-of-straights.org

#+PROPERTY: STUDY_DECK_02
* TODO 0846. Hand of Straights :medium:
:PROPERTIES:
:NEETCODE: [[file:../../roadmap.org::*0846. Hand of Straights][0846. Hand of Straights]]
:END:

Alice has some number of cards and she wants to rearrange the 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 ~i^{th}~ card and an integer ~groupSize~, return ~true~ if she can rearrange the cards, or ~false~ otherwise.

*Example 1:*


#+begin_src
Input: hand = [1,2,3,6,2,3,4,7,8], groupSize = 3
Output: true
Explanation: Alice's hand can be rearranged as [1,2,3],[2,3,4],[6,7,8]
#+end_src


*Example 2:*


#+begin_src
Input: hand = [1,2,3,4,5], groupSize = 4
Output: false
Explanation: Alice's hand can not be rearranged into groups of 4.
#+end_src


*Constraints:*

 - ~1 <= hand.length <= 10^{4}~

 - ~0 <= hand[i] <= 10^{9}~

 - ~1 <= groupSize <= hand.length~

*Note:* This question is the same as 1296: https://leetcode.com/problems/divide-array-in-sets-of-k-consecutive-numbers/

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python
class Solution:
    def isNStraightHand(self, hand: List[int], groupSize: int) -> bool:
#+end_src

** TODO C++
#+begin_src cpp
class Solution {
public:
    bool isNStraightHand(vector<int>& hand, int groupSize) {
        
    }
};
#+end_src