Leetcode Problem 2077. Paths in Maze That Lead to Same Room

2077. Paths in Maze That Lead to Same Room

Leetcode Solutions

Python | Set Intersection | Brute Force -> Most Optimal

  1. Create a dictionary neighbors to store the set of neighbors for each node.
  2. Iterate through the corridors list and populate the neighbors dictionary such that each key-value pair represents a node and its set of connected nodes.
  3. Initialize a variable ans to store the number of cycles found.
  4. Iterate through all pairs of nodes (FirstNode, ThirdNode) that are directly connected.
  5. For each pair, use set intersection to find common nodes between the neighbors of FirstNode and ThirdNode.
  6. Increment ans by the number of common nodes found.
  7. After checking all pairs, divide ans by 3 to correct for overcounting.
  8. Return the final count stored in ans.
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Python nested loops

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