{ "data": { "question": { "questionId": "1656", "questionFrontendId": "1534", "boundTopicId": null, "title": "Count Good Triplets", "titleSlug": "count-good-triplets", "content": "

Given an array of integers arr, and three integers a, b and c. You need to find the number of good triplets.

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A triplet (arr[i], arr[j], arr[k]) is good if the following conditions are true:

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Where |x| denotes the absolute value of x.

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Return the number of good triplets.

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Example 1:

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\r\nInput: arr = [3,0,1,1,9,7], a = 7, b = 2, c = 3\r\nOutput: 4\r\nExplanation: There are 4 good triplets: [(3,0,1), (3,0,1), (3,1,1), (0,1,1)].\r\n
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Example 2:

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\r\nInput: arr = [1,1,2,2,3], a = 0, b = 0, c = 1\r\nOutput: 0\r\nExplanation: No triplet satisfies all conditions.\r\n
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Constraints:

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Compiled with clang 11 using the latest C++ 17 standard.

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Most standard library headers are already included automatically for your convenience.

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Most standard library headers are already included automatically for your convenience.

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C# 10 with .NET 6 runtime

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