Root To Node Path in Binary Tree

DFS with backtracking path visualizer

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Target
Step0/32
PathNot Found
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Python Code

3 
●    def dfs(node):
5        if node is None:
6            return False
7 
8        path.append(node.data)
9 
10        if node.data == target:
11            return True
12 
13        if dfs(node.left):
14            return True
15 
16        if dfs(node.right):
17            return True
18 
19        path.pop()
20        return False
Current Line (4): DFS Function Entry

Tree Structure

1234567
Operation:ENTER

Traversal Progress

Current Node

-

Phase

Enter Function

Current Path

Path evolves here while DFS explores...
Step 1: ENTER

Recursion Stack

Stack is empty. Click Next to begin!

Step Explanation

Ready to Start

Click "Next Step" to search path for target 7. DFS will push nodes and backtrack on dead ends.

  • > Start from dfs(root).
  • > Watch call stack, highlighted line, and path array together.
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