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Monday, August 1, 2011

Problem:
 You have two very large binary trees: T1, with millions of nodes, and T2, with hundreds of nodes   Create an algorithm to decide if T2 is a subtree of T1
Solution:
  1. Traverse the Tree T1.
  2. For each node, call a method to do the following (Step 3),
  3. traverse both the Tree T1 and T2, until tree T2 exhausts or until data of T1 and T2 does not match. 
  4. Return true if T2 is a subtree of T1 else return false.
 
 Complexity: O(m*n) in the worst case
Code:

Posted by anantha at 8/01/2011 03:02:00 PM
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