Leetcode Problem 2831. Find the Longest Equal Subarray

2831. Find the Longest Equal Subarray

Leetcode Solutions

Sliding Window with Frequency Count

  1. Initialize two pointers i and j to represent the start and end of the sliding window, respectively.
  2. Initialize a dictionary count to keep track of the frequency of each element within the window.
  3. Initialize maxf to keep track of the maximum frequency of any element within the window.
  4. Iterate over the array using the end pointer j.
    • Increment the frequency of nums[j] in count.
    • Update maxf to be the maximum of its current value and the frequency of nums[j].
    • If the current window size minus maxf is greater than k, increment the start pointer i and decrement the frequency of nums[i] in count.
  5. The length of the longest equal subarray is the maximum window size achieved during the iteration.
  6. Return the length of the longest equal subarray.
UML Thumbnail

HashMap of Queues for Index Tracking

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