Leetcode Problem 2003. Smallest Missing Genetic Value in Each Subtree

2003. Smallest Missing Genetic Value in Each Subtree

Leetcode Solutions

Path-Limited Traversal

  1. Initialize an array res of size n with all elements set to 1.
  2. Find the index i of the node with genetic value 1. If 1 is not in nums, return res as is.
  3. Create an adjacency list children to represent the tree structure.
  4. Initialize a seen array to keep track of visited genetic values.
  5. Define a recursive DFS function that marks genetic values as seen.
  6. Starting from node i, perform DFS on its subtree to mark all genetic values in the subtree as seen.
  7. After DFS, increment the smallest missing value miss until a value not seen is found.
  8. Set res[i] to miss.
  9. Move to the parent of i and repeat steps 6-8 until the root is reached.
  10. Return the res array.
UML Thumbnail

Union-Find with Genetic Value Tracking

Ask Question

Programming Language
image/screenshot of info(optional)
Full Screen
Loading...

Suggested Answer

Answer
Full Screen
Copy Answer Code
Loading...