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What does the other nodes of an expression tree(except leaves) contain?

(a) only operands

(b) only operators

(c) both operands and operators

(d) expression

My question is taken from Trees topic in division Trees of Data Structures & Algorithms I

I have been asked this question during an interview for a job.

1 Answer

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Best answer
Correct choice is (b) only operators

Best explanation: The nodes other than leaves always contain only operators. There cannot be any operand in those nodes.

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