Leetcode Problem 2404. Most Frequent Even Element

2404. Most Frequent Even Element

Leetcode Solutions

Using HashMap to Find Most Frequent Even Element

  1. Initialize a HashMap to store the frequency of even elements.
  2. Iterate through the array nums:
    • If the current element is even, increment its frequency in the HashMap.
  3. Initialize variables to keep track of the most frequent even element and its frequency.
  4. Iterate through the HashMap:
    • If the frequency of the current element is higher than the recorded frequency, update the most frequent element and frequency.
    • If the frequency is the same but the element is smaller, update the most frequent element.
  5. If no even element is found, return -1. Otherwise, return the most frequent even element.
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Sorting and Linear Traversal

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