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Clone a Binary Tree
Submissions: 10203   Accuracy:


  Difficulty: Medium   Marks: 4
Associated Course(s):   Amazon SDE Test Series

Given a Binary Tree having random pointers clone the Binary Tree. The task is to complete the function cloneTree which take one argument the root of the tree to be copied and should return the root of the cloned tree.

The first line of input contains the no of test cases. Then T test cases follow. Each test case contains 2 lines the first line contains and integer N denoting the no of edges of the tree and then in the next line are N space separated queries .The query on tree are of three types
a) a b L  (Represents that b is the left child of a)
b) a b R (Represents that b is the right child of a)
c) a b X (Represents a random pointer from node a to node b)  

Your function should return the root of the cloned tree. The output will be 1 if the tree is successfully cloned.

Your Task:
No need to read any input/output. Just complete the function cloneTree() which takes root of the tree as a parameter and returns the root of the cloned tree.

Expected Time Complexity: O(N).
Expected Auxiliary Space: O(N).

1 <=T<= 30
1 <=Number of nodes<= 100
1 <=Data of a node<= 1000

Example(To be used only for expected output):

6 3 L 6 8 R 3 1 L 3 5 R 1 3 X 5 6 X


Note:The Input/Ouput format and Example given are used for system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.

** For More Input/Output Examples Use 'Expected Output' option **

Author: Shubham Joshi 1

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