2341. Maximum Number of Pairs in Array
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class Solution:
def numberOfPairs(self, nums: List[int]) -> List[int]:
cnt = Counter(nums)
s = sum(v // 2 for v in cnt.values())
return [s, len(nums) - s * 2]
class Solution:
def numberOfPairs(self, nums: List[int]) -> List[int]:
cnt = Counter(nums)
s = sum(v // 2 for v in cnt.values())
return [s, len(nums) - s * 2]