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The inorder and preorder traversal of a binary tree are d b e a f c g and a b d e c f g, respectively. The postorder traversal of the binary tree is:
  • a)
    d e b f g c a
  • b)
    e d b g f c a
  • c)
    e d b f g c a
  • d)
    d e f g b c a
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The inorder and preorder traversal of a binary tree are d b e a f c g ...
Explanation:

Given Traversals:
Inorder: d b e a f c g
Preorder: a b d e c f g

Steps to find Postorder:
1. The first element in the Preorder traversal is the root of the tree, which is 'a'.
2. Find the position of 'a' in the Inorder traversal. Everything to the left of 'a' in the Inorder traversal is the left subtree, and everything to the right is the right subtree.
3. In the Inorder traversal, the left subtree of 'a' is 'd b e' and the right subtree is 'f c g'.
4. From the Preorder traversal, the elements corresponding to the left subtree are 'b d e' and the elements corresponding to the right subtree are 'c f g'.
5. Recursively apply the above steps for the left and right subtrees to construct the Postorder traversal.
6. The Postorder traversal of the binary tree is 'd e b f g c a'.
Therefore, the correct answer is option 'A': d e b f g c a.
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Community Answer
The inorder and preorder traversal of a binary tree are d b e a f c g ...
Below is the given tree.
                              a
                           /    \
                        /          \
                      b             c
                   /   \          /   \
                 /       \      /       \
               d         e    f          g
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The inorder and preorder traversal of a binary tree are d b e a f c g and a b d e c f g, respectively. The postorder traversal of the binary tree is:a)d e b f g c ab)e d b g f c ac)e d b f g c ad)d e f g b c aCorrect answer is option 'A'. Can you explain this answer?
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