{ "data": { "question": { "questionId": "3374", "questionFrontendId": "3101", "boundTopicId": null, "title": "Count Alternating Subarrays", "titleSlug": "count-alternating-subarrays", "content": "

You are given a binary array nums.

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We call a subarray alternating if no two adjacent elements in the subarray have the same value.

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Return the number of alternating subarrays in nums.

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Example 1:

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Input: nums = [0,1,1,1]

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Output: 5

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Explanation:

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The following subarrays are alternating: [0], [1], [1], [1], and [0,1].

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Example 2:

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Input: nums = [1,0,1,0]

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Output: 10

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Explanation:

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Every subarray of the array is alternating. There are 10 possible subarrays that we can choose.

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Constraints:

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