{ "data": { "question": { "questionId": "2432", "questionFrontendId": "2348", "boundTopicId": null, "title": "Number of Zero-Filled Subarrays", "titleSlug": "number-of-zero-filled-subarrays", "content": "

Given an integer array nums, return the number of subarrays filled with 0.

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A subarray is a contiguous non-empty sequence of elements within an array.

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Example 1:

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\nInput: nums = [1,3,0,0,2,0,0,4]\nOutput: 6\nExplanation: \nThere are 4 occurrences of [0] as a subarray.\nThere are 2 occurrences of [0,0] as a subarray.\nThere is no occurrence of a subarray with a size more than 2 filled with 0. Therefore, we return 6.
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Example 2:

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\nInput: nums = [0,0,0,2,0,0]\nOutput: 9\nExplanation:\nThere are 5 occurrences of [0] as a subarray.\nThere are 3 occurrences of [0,0] as a subarray.\nThere is 1 occurrence of [0,0,0] as a subarray.\nThere is no occurrence of a subarray with a size more than 3 filled with 0. Therefore, we return 9.\n
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Example 3:

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\nInput: nums = [2,10,2019]\nOutput: 0\nExplanation: There is no subarray filled with 0. Therefore, we return 0.\n
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Constraints:

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