EasyNo. 2347
Best Poker Hand — LeetCode 2347 Python Solution
- Pattern
- Hash Map
- Topics
- Array, Hash Table, Counting
- Reading time
- 2 min
- Source
- leetcode.com
The problem
You are given an integer array ranks and a character array suits. You have 5 cards where the ith card has a rank of ranks[i] and a suit of suits[i].
Example
- Input
- ranks = [13,2,3,1,9], suits = ["a","a","a","a","a"]
- Output
- "Flush"
- Explanation
- The hand with all the cards consists of 5 cards with the same suit, so we have a "Flush".
Python solution
class Solution:
def bestHand(self, ranks: List[int], suits: List[str]) -> str:
# if len(set(suits)) == 1:
if all(a == b for a, b in pairwise(suits)):
return 'Flush'
cnt = Counter(ranks)
if any(v >= 3 for v in cnt.values()):
return 'Three of a Kind'
if any(v == 2 for v in cnt.values()):
return 'Pair'
return 'High Card'Complexity
- Time
- O(n)
- Space · auxiliary
- O(n)
Pattern: Hash Map
Trade memory for time: remember what you have seen so the second pass never happens. LeetCode 2347. Best Poker Hand is filed here on both counts: the reference solution below belongs to the algorithm family this hub collects, and LeetCode tags it Hash Table and Counting.
The hash map guide has the Python template for the pattern and the 709 LeetCode problems that use it.
Related problems
| No. | Problem | Difficulty |
|---|---|---|
| 2341 | Maximum Number of Pairs in Array | Easy |
| 0169 | Majority Element | Easy |
| 0229 | Majority Element II | Medium |
| 0347 | Top K Frequent Elements | Medium |
| 0594 | Longest Harmonious Subsequence | Easy |
| 0621 | Task Scheduler | Medium |
Frequently asked questions
- How hard is LeetCode 2347. Best Poker Hand?
LeetCode 2347. Best Poker Hand is rated Easy on LeetCode.
- What is the time complexity of LeetCode 2347. Best Poker Hand?
The Python solution on this page runs in O(n).
- What is the space complexity of LeetCode 2347. Best Poker Hand?
The Python solution on this page uses O(n) auxiliary space.
- What topics does LeetCode 2347. Best Poker Hand cover?
LeetCode 2347. Best Poker Hand is tagged Array, Hash Table and Counting on LeetCode.