DSA Level 2 Data Structures Trees Construct Binarytree From Postorder And Inorder Traversal

Construct Binarytree From Postorder And Inorder Traversal

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1. You are given a partially written function to solve(Refer question video).
2. Task : Construct Binary Tree from PostOrder and InOrder Traversal.
3. you will be given two arrays representing a valid PostOrder & InOrder of a Binary Tree. Program is required to create a unique Binary Tree.

Input Format

Input is managed for you.

Output Format

Output is managed for you.

Constraints

0 &lt;= Number of Nodes &lt;= 10^9
-10^9 &lt;= value of Node data &lt;= 10^9
Valid InOrder & PostOrder traversals.

Notice

Try First, Check Solution later

1. You should first read the question and watch the question video.
2. Think of a solution approach, then try and submit the question on editor tab.
3. We strongly advise you to watch the solution video for prescribed approach.

Example

Input

7
1 3 2 5 7 6 4
1 2 3 4 5 6 7

Output

2 -> 4 <- 6
1 -> 2 <- 3
. -> 1 <- .
. -> 3 <- .
5 -> 6 <- 7
. -> 5 <- .
. -> 7 <- .

Construct Binarytree From Preorder And Inorder Traversal

Construct Bst From Inorder Traversal

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