Write a method to perform an NLR scan on a binary tree. Assume the method will operate on trees implemented as arrays. Provide a driver program to demonstrate that the method functions properly. Use the trees shown in Figure 7.3 as test cases.
Fig.7.3
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Expert Answer
NLR or preorder traversal is done with trees or arrays. The binary tree can be represented as below if the root is ith element,
root:tree[root]
left child:tree[root+1]
right child:tree[root+2]
The array representation of first tree given is: tree={‘A’,’B’,’D’,’