{ "data": { "question": { "questionId": "1034", "questionFrontendId": "992", "boundTopicId": null, "title": "Subarrays with K Different Integers", "titleSlug": "subarrays-with-k-different-integers", "content": "

Given an integer array nums and an integer k, return the number of good subarrays of nums.

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A good array is an array where the number of different integers in that array is exactly k.

\n\n\n\n

A subarray is a contiguous part of an array.

\n\n

 

\n

Example 1:

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\nInput: nums = [1,2,1,2,3], k = 2\nOutput: 7\nExplanation: Subarrays formed with exactly 2 different integers: [1,2], [2,1], [1,2], [2,3], [1,2,1], [2,1,2], [1,2,1,2]\n
\n\n

Example 2:

\n\n
\nInput: nums = [1,2,1,3,4], k = 3\nOutput: 3\nExplanation: Subarrays formed with exactly 3 different integers: [1,2,1,3], [2,1,3], [1,3,4].\n
\n\n

 

\n

Constraints:

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Python 2.7.12.

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Go 1.21

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