LC-2997 Medium LeetCode

2997. Minimum Number of Operations to Make Array XOR Equal to K

Read the full problem statement on LeetCode.

Difficulty: medium Acceptance: 85% Topics: Array, Bit Manipulation

Reading material

Arrays & Hashing 12 min Bit Manipulation 10 min

Reference solution (spoiler · python)

# Time:  O(n)
# Space: O(1)

# bit manipulation
class Solution(object):
    def minOperations(self, nums, k):
        """
        :type nums: List[int]
        :type k: int
        :rtype: int
        """
        def popcount(x):
            return bin(x).count('1')
    
        return popcount(reduce(lambda x, y: x^y, nums, k))

Solution from kamyu104/LeetCode-Solutions · MIT