Leetcode Problem 2316. Count Unreachable Pairs of Nodes in an Undirected Graph

2316. Count Unreachable Pairs of Nodes in an Undirected Graph

Leetcode Solutions

Depth First Search to Count Unreachable Node Pairs

  1. Create an adjacency list from the given edges.
  2. Initialize a variable numberOfPairs to 0 to count the unreachable pairs.
  3. Initialize a variable remainingNodes to n to track the number of nodes not yet considered in a component.
  4. Initialize a visited array to keep track of visited nodes.
  5. For each node, if it is not visited, perform DFS to find the size of its component.
  6. For each component found, calculate the number of unreachable pairs and add it to numberOfPairs.
  7. Update remainingNodes after considering each component.
  8. Return numberOfPairs.
UML Thumbnail

Union-Find to Count Unreachable Node Pairs

Ask Question

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

Suggested Answer

Answer
Full Screen
Copy Answer Code
Loading...