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Depth-First Search (DFS) Visualizer

STEM Interactive Visual Learning Program at TEC-Bridge AI

Setup Graph

DFS Controls

Graph Visualization

Colors: Green = Start, Yellow = Current, Blue = Visited, Purple = On Stack

Stack

Algorithm Steps

How to Use

  1. Setup: Click "Sample Graph" or "Random Graph" to create a graph
  2. Start Node: Enter the starting node (e.g., A, B, C) and click "Start DFS"
  3. Step Through: Click "Next Step" to see each step of the DFS execution
  4. Run Through: Click "Run Through" to automatically execute all steps
  5. Observe: Watch nodes change colors and the stack update as DFS progresses
  6. Reset: Click "Reset" to start over with a new search

DFS Concept

Depth-First Search (DFS) is a graph traversal algorithm that explores as far as possible along each branch before backtracking.

How it works:

  • Start with a node and push it onto the stack
  • Mark the current node as visited
  • Push unvisited neighbors onto the stack
  • Pop from stack and repeat with the new current node
  • Backtrack when no unvisited neighbors exist
  • Continue until stack is empty

Time Complexity: O(V + E) where V = vertices, E = edges

Depth-First Search Code Implementation

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