Leetcode Problem 399. Evaluate Division
Leetcode Solutions
Approach: Path Search in Graph
- Build a graph from the input equations, with nodes representing variables and directed edges representing division relationships with associated weights.
- For each query, check if a path exists between the nodes. If not, return -1.0.
- 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.
- Return the cumulative product as the answer to the query.
Approach: Union-Find with Weights
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