Given an integer array nums, return the length of the longest subarray that has a bitwise XOR of zero and contains an equal number of even and odd numbers. If no such subarray exists, return 0.
Example 1:
Input: nums = [3,1,3,2,0]
Output: 4
Explanation:
The subarray [1, 3, 2, 0] has bitwise XOR 1 XOR 3 XOR 2 XOR 0 = 0 and contains 2 even and 2 odd numbers.
Example 2:
Input: nums = [3,2,8,5,4,14,9,15]
Output: 8
Explanation:
The whole array has bitwise XOR 0 and contains 4 even and 4 odd numbers.
Example 3:
Input: nums = [0]
Output: 0
Explanation:
No non-empty subarray satisfies both conditions.
Constraints:
- 1 <= nums.length <= 105
- 0 <= nums[i] <= 109