3712. Sum of Elements With Frequency Divisible by K

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You are given an integer array nums and an integer k. Return an integer denoting the sum of all elements in nums whose frequency is divisible by k, or 0 if there are no such elements. Note: An element is included in the sum exactly as many times as it appears in the array if its total frequency is divisible by k. Example 1: Input: nums = [1,2,2,3,3,3,3,4], k = 2 Output: 16 Explanation: -

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