Leetcode Problem 2792. Count Nodes That Are Great Enough

2792. Count Nodes That Are Great Enough

Leetcode Solutions

DFS with Sorted Subtree Values

  1. Define a recursive DFS function that takes a node as an argument.
  2. If the node is null, return an empty list.
  3. Recursively call the DFS function on the left and right children of the node.
  4. Merge the sorted lists from the left and right subtrees.
  5. If the merged list has at least k elements and the k-th smallest element is less than the node's value, increment the count of great enough nodes.
  6. Add the node's value to the merged list, ensuring the list remains sorted and contains at most k elements.
  7. Return the merged list to the parent call.
  8. Start the DFS from the root node and return the count of great enough nodes.
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DFS with Priority Queue

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