Leetcode Problem 2672. Number of Adjacent Elements With the Same Color

2672. Number of Adjacent Elements With the Same Color

Leetcode Solutions

Maintain Adjacent Colors Count

  1. Initialize an array nums of length n with all elements set to 0 (uncolored).
  2. Initialize a variable count to 0 to keep track of the number of adjacent elements with the same color.
  3. Initialize an empty list answer to store the result after each query.
  4. Iterate through each query in queries: a. Extract index and color from the current query. b. Check the color of the adjacent elements (if they exist) before updating the color at index. c. If the adjacent element's color matches the current color at index, decrement count. d. Update the color at index in nums to color. e. Check the color of the adjacent elements again. f. If the adjacent element's color matches the new color at index, increment count. g. Append the current count to the answer list.
  5. Return the answer list.
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