Leetcode Problem 1361. Validate Binary Tree Nodes

1361. Validate Binary Tree Nodes

Leetcode Solutions

Depth First Search (DFS) to Validate Binary Tree

  1. Define a function findRoot to locate the root of the tree.
  2. Perform a DFS starting from the root.
  3. Use a seen set to keep track of visited nodes.
  4. If a node is visited more than once, return false.
  5. After the DFS, check if the number of visited nodes is equal to n.
  6. Return true if all conditions are met, otherwise return false.
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Union Find to Validate Binary Tree

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