You are given a binary array nums.
We call a subarray alternating if no two adjacent elements in the subarray have the same value.
Return the number of alternating subarrays in nums.
Example 1:
Input: nums = [0,1,1,1]
Output: 5
Explanation:
The following subarrays are alternating: [0], [1], [1], [1], and [0,1].
Example 2:
Input: nums = [1,0,1,0]
Output: 10
Explanation:
Every subarray of the array is alternating. There are 10 possible subarrays that we can choose.
Constraints:
1 <= nums.length <= 105nums[i] is either 0 or 1.