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An expression tree is a kind of?

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An expression tree is a kind of?

(a) Binary search tree

(b) Fibonacci tree

(c) Binary tree

(d) Treap

I'd like to ask this question from Trees in division Trees of Data Structures & Algorithms I

This question was posed to me in a job interview.

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The correct choice is (c) Binary tree

The best explanation: The expression tree is a binary tree. It contains operands at leaf nodes and remaining nodes are filled with operators. The operands and the operators can be arranged in any order (ascending, descending).

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