ByteByteGo: Lonely Integer
β’ 58 words β’ 1 min β’ updated
python
from typing import List
from functools import reduce
def lonely_integer(nums: List[int]) -> int:
return reduce(lambda x, y: x ^ y, nums)If you forget how to call reduce:
python
from typing import List
from functools import reduce
def lonely_integer(nums: List[int]) -> int:
ans = 0
for num in nums:
ans ^= num
return ans