How to Solve Maximum Good Subarray Sum Problem
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Maximum Good Subarray Sum
You are given an array nums of length n and a positive integer k. A subarray of nums is called good if the absolute difference between its first and last element is exactly k, in other words, the suba...
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Understanding the Maximum Good Subarray Sum Problem
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Problem Statement
You are given an array nums of length n and a positive integer k. A subarray of nums is called good if the absolute difference between its first and last element is exactly k, in other words, the subarray nums[i..j] is good if |nums[i] - nums[j]| == k. Return the maximum sum of a good subarray of nums. If there are no good subarrays, return 0.
Maximum Good Subarray Sum
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Examples
nums = [1,2,3,4,5,6], k = 111The absolute difference between the first and last element must be 1 for a good subarray. All the good subarrays are: [1,2], [2,3], [3,4], [4,5], and [5,6]. The maximum subarray sum is 11 for the subarray [5,6].
nums = [-1,3,2,4,5], k = 311The absolute difference between the first and last element must be 3 for a good subarray. All the good subarrays are: [-1,3,2], and [2,4,5]. The maximum subarray sum is 11 for the subarray [2,4,5].
nums = [-1,-2,-3,-4], k = 2-6The absolute difference between the first and last element must be 2 for a good subarray. All the good subarrays are: [-1,-2,-3], and [-2,-3,-4]. The maximum subarray sum is -6 for the subarray [-1,-2,-3].
Constraints
2 <= nums.length <= 105109 <= nums[i] <= 1091 <= k <= 109How Interview Coder Helps with Leetcode Problems
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