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Construct Bst From Levelorder Traversal

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1. You are given a partially written function to solve(Refer question video).
2. Task : Construct Binary Search Tree from given LevelOrder Traversal.
3. you will be given an array representing a valid LevelOrder of a Binary Search Tree. Program is required to create a unique Binary Search Tree.
Input Format 
Input is managed for you.
Output Format 
Output is managed for you.
Question Video
Constraints 
0 <= Number of Nodes <= 10^9
-10^9 <= value of Node data <= 10^9
Valid LevelOrder traversal.
Sample Input 
6
3 2 5 1 6 7
Sample Output 
2 -> 3 <- 5
1 -> 2 <- .
. -> 1 <- .
. -> 5 <- 6
. -> 6 <- 7
. -> 7 <- .


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