{ "data": { "question": { "questionId": "1370", "questionFrontendId": "1248", "boundTopicId": null, "title": "Count Number of Nice Subarrays", "titleSlug": "count-number-of-nice-subarrays", "content": "

Given an array of integers nums and an integer k. A continuous subarray is called nice if there are k odd numbers on it.

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Return the number of nice sub-arrays.

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Example 1:

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\r\nInput: nums = [1,1,2,1,1], k = 3\r\nOutput: 2\r\nExplanation: The only sub-arrays with 3 odd numbers are [1,1,2,1] and [1,2,1,1].\r\n
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Example 2:

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\r\nInput: nums = [2,4,6], k = 1\r\nOutput: 0\r\nExplanation: There is no odd numbers in the array.\r\n
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Example 3:

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\r\nInput: nums = [2,2,2,1,2,2,1,2,2,2], k = 2\r\nOutput: 16\r\n
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Constraints:

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