2404. Most Frequent Even Element

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Given an integer array nums, return the most frequent even element. If there is a tie, return the smallest one. If there is no such element, return -1. Example 1: Input: nums = [0,1,2,2,4,4,1] Output: 2 Explanation: The even elements are 0, 2, and 4. Of these, 2 and 4 appear the most. We return the smallest one, which is 2. Example 2: Input: nums = [4,4,4,9,2,4] Output: 4 Explanation: 4 is

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