How to Solve Subarrays Distinct Element Sum of Squares I Problem
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Subarrays Distinct Element Sum of Squares I
You are given a 0-indexed integer array nums. The distinct count of a subarray of nums is defined as: Let nums[i..j] be a subarray of nums consisting of all the indices from i to j such that 0 <= i <=...
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Understanding the Subarrays Distinct Element Sum of Squares I Problem
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Problem Statement
You are given a 0-indexed integer array nums. The distinct count of a subarray of nums is defined as: Let nums[i..j] be a subarray of nums consisting of all the indices from i to j such that 0 <= i <= j < nums.length. Then the number of distinct values in nums[i..j] is called the distinct count of nums[i..j]. Return the sum of the squares of distinct counts of all subarrays of nums. A subarray is a contiguous non-empty sequence of elements within an array.
Subarrays Distinct Element Sum of Squares I
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Examples
nums = [1,2,1]15Six possible subarrays are: [1]: 1 distinct value [2]: 1 distinct value [1]: 1 distinct value [1,2]: 2 distinct values [2,1]: 2 distinct values [1,2,1]: 2 distinct values The sum of the squares of the distinct counts in all subarrays is equal to 12 + 12 + 12 + 22 + 22 + 22 = 15.
nums = [1,1]3Three possible subarrays are: [1]: 1 distinct value [1]: 1 distinct value [1,1]: 1 distinct value The sum of the squares of the distinct counts in all subarrays is equal to 12 + 12 + 12 = 3.
Constraints
1 <= nums.length <= 1001 <= nums[i] <= 100How Interview Coder Helps with Leetcode Problems
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