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What is a complete binary tree?(a) Each node has exactly zero or two children(b) A binary tree, which is completely filled, with the possible exception of the bottom level, which is filled from right to left(c) A binary tree, which is completely filled, with the possible exception of the bottom level, which is filled from left to right(d) A tree In which all nodes have degree 2The query is from Binary Tree Properties in division Binary Trees of Data Structures & Algorithms II had been asked this question by my school principal while I was bunking the class.

Answer»

The CORRECT answer is (c) A binary tree, which is completely filled, with the possible exception of the bottom level, which is filled from left to right

Explanation: A binary tree, which is completely filled, with the possible exception of the bottom level, which is filled from left to right is called complete binary tree. A Tree in which each NODE has exactly zero or two children is called FULL binary tree. A Tree in which the degree of each node is 2 except leaf NODES is called perfect binary tree.



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