Leetcode Problem 1971. Find if Path Exists in Graph

1971. Find if Path Exists in Graph

Leetcode Solutions

Breadth First Search (BFS) to Find a Valid Path

  1. Create a graph representation using a hash map where each key is a node and its value is a list of its neighbors.
  2. Initialize a queue and add the source node to it.
  3. Mark the source node as visited.
  4. While the queue is not empty, perform the following steps: a. Dequeue the current node from the queue. b. If the current node is the destination, return true. c. Iterate over the neighbors of the current node. i. If a neighbor has not been visited, mark it as visited and enqueue it.
  5. If the queue becomes empty and the destination has not been found, return false.
UML Thumbnail

Depth First Search (DFS) to Find a Valid Path

Ask Question

Programming Language
image/screenshot of info(optional)
Full Screen
Loading...

Suggested Answer

Answer
Full Screen
Copy Answer Code
Loading...