Leetcode Problem 1786. Number of Restricted Paths From First to Last Node
Leetcode Solutions
Dijkstra & Cached DFS - Clean & Concise
- Create a graph representation from the edges list.
- Use Dijkstra's algorithm to find the shortest distance from node
nto all other nodes. - Implement a DFS function that counts the number of restricted paths from the current node to the last node, using the distances calculated by Dijkstra's algorithm.
- Use memoization to cache the results of the DFS function to avoid recalculating paths.
- Return the result of the DFS function starting from node
1.
Dijkstra's + DFS + Memoization
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