+1 vote
in Data Structures & Algorithms I by (110k points)
How many stacks are required for evaluation of prefix expression?

(a) one

(b) two

(c) three

(d) four

The doubt is from Application of Stacks in section Application of Stacks of Data Structures & Algorithms I

The question was posed to me during a job interview.

1 Answer

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by (444k points)
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Best answer
Correct choice is (b) two

The best explanation: 2 stacks are required for evaluation of prefix expression, one for integers and one for characters.

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