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If BDAECF and ABDCEF are inorder and preorder traversals of a binary tree (T) respectively, then post-order traversal of T is:

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HTET PGT Official Computer Science Paper - 2017
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  1. DBFECA
  2. BDEFCA
  3. DBEFCA
  4. BDFEAC

Answer (Detailed Solution Below)

Option 3 : DBEFCA
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Detailed Solution

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Data

In order is BDAECF

Preorder is ABDCEF

Binary tree

Therefore Post order will be DBEFCA

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More Tree Traversal Questions

Q1.Arrange the following steps of the Inorder Traversal of Binary Tree in the correct order. A. Visit the Left subtree B. Visit the Root node C. Visit the Right subtree D. Start traversing by visiting the nodes in rooted tree E. Repeat the above three steps. Choose the correct answer from the options given below:
Q2. Considering above binary tree, what will be the inorder traversal
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Q7.Consider the following statements. S1 : The sequence of procedure calls corresponds to a preorder traversal of the activation tree. S2 : The sequence of procedure returns corresponds to a postorder traversal of the activation tree. Which one of the following options is correct?
Q8.Consider a complete binary tree with 7 nodes. Let A denote the set of first 3 elements obtained by performing Breadth-First Search (BFS) starting from the root. Let B denote the set of first 3 elements obtained by performing Depth-First Search (DFS) starting from the root. The value of |A - B| is _______
Q9.The Preorder traversal of a tree given below is:
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More Tree Questions

Q1.Non leaf nodes of B+ tree structure form a : 
Q2.Total number of nodes at the nth level of a full binary tree can be given as __________.
Q3.Arrange the following steps of the Inorder Traversal of Binary Tree in the correct order. A. Visit the Left subtree B. Visit the Root node C. Visit the Right subtree D. Start traversing by visiting the nodes in rooted tree E. Repeat the above three steps. Choose the correct answer from the options given below:
Q4.Which of the following algorithms are based on the Breadth First Search (BFS)? A. Prim's algorithms B. Kruskal algorithms C. Dijkstra algorithms D. Greedy algorithms E. Dynamic Programming Choose the correct answer from the options given below:
Q5. Considering above binary tree, what will be the inorder traversal
Q6.Which of the following description(s) is/are true: A. Red Black Tree - Guarantees worst case of O(log n) time for search, insert & delete. B. Trie - Used for efficient prefix - based searches. C. AVL Tree - self balancing binary search tree with stricker balance criteria. D. B - Tree - Allows efficient search, inert, delete operations in disk based system. Choose the correct answer from the options given below:
Q7.Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The AVL trees are more balanced as compared to Red Black trees, but they may cause more rotations during insertion and deletion Reason R: A Red Black tree with n nodes has height that is greater than 2 log2 (n + 1) and the AVL tree with n nodes has height less than logΦ (√5 (n+2)) -2 (where Φ is golden ratio) In the light of the above statements, choose the correct answer from the options given below. 
Q8.How many different binary trees are possible with 'n' nodes?
Q9.Consider the traversal of a tree Preorder → ABCEIFJDGHKL Inorder → EICFJBGDKHLA Which of the following is correct post order traversal?
Q10.Which of the following is/are correct about a strictly binary tree? A. A binary tree is called strictly binary tree if every non-­leaf node of it has non empty left and right sub tree B. In strictly binary tree can have two children or no child C. A strictly binary tree with n leaves always contains 2n­-1 nodes
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