Leetcode Problem 2190. Most Frequent Number Following Key In an Array

2190. Most Frequent Number Following Key In an Array

Leetcode Solutions

Using HashMap to Track Frequencies

  1. Initialize an empty HashMap to store the frequency of each target that follows the key.
  2. Iterate through the array from index 0 to nums.length - 2.
  3. For each index i, check if nums[i] is equal to key.
  4. If it is, increment the count of nums[i + 1] in the HashMap.
  5. Keep track of the target with the maximum frequency and its count while iterating.
  6. After the iteration, return the target with the maximum frequency.
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