Leetcode Problem 1059. All Paths from Source Lead to Destination

1059. All Paths from Source Lead to Destination

Leetcode Solutions

Depth First Search with Node Coloring

  1. Initialize an adjacency list from the edges.
  2. Create a color array to keep track of the colors of the nodes.
  3. Define a recursive function leadsToDest that takes the current node and the color array.
  4. If the current node has no neighbors and is not the destination, return false.
  5. If the current node is GRAY, a cycle is detected, return false.
  6. If the current node is BLACK, it's already processed, continue to the next node.
  7. Mark the current node as GRAY and process all its neighbors.
  8. If any neighbor processing returns false, return false.
  9. After processing all neighbors, mark the current node as BLACK and return true.
  10. Call leadsToDest starting from the source node and return its result.

Breadth-First Search with Cycle Detection

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