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Leetcode Problem 399. Evaluate Division

399. Evaluate Division

Leetcode Solutions

Approach: Path Search in Graph

  1. Build a graph from the input equations, with nodes representing variables and directed edges representing division relationships with associated weights.
  2. For each query, check if a path exists between the nodes. If not, return -1.0.
  3. If a path exists, perform a depth-first search (DFS) or breadth-first search (BFS) to find the path and calculate the cumulative product of weights along the path.
  4. Return the cumulative product as the answer to the query.
UML Thumbnail

Approach: Union-Find with Weights

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