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Amazon Interview Question for Software Engineer / Developers


Country: India
Interview Type: Written Test



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2
of 2 vote

You can implement Dijkstra's two-stack algorithm to evaluate the expression.

- andy29411693 October 04, 2012 | Flag Reply
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0
of 0 votes

That is exactly what the other answers tells: Shunting yard + RPN.

- Anonymous October 04, 2012 | Flag
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0
of 0 votes

If I were the examiner, I'd follow on the question by asking what is Shunting Yard and pick holes in your understandings of it. It's certainly not as easy as memorizing a sorting algorithm.

- Chris October 20, 2012 | Flag
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0
of 0 votes

I'm sure Amazon didn't ask this question to test my general knowledge, so I'd rather not quote Shunting Yard if I cannot recite it in full glorious details. I personally think recursion would be a good answer, it at least shows I'm thinking, not regurgitating.

- Chris October 20, 2012 | Flag
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1
of 1 vote

Convert the string in postfix expression.
Evaluate postfix expression

- pradegup October 04, 2012 | Flag Reply
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1
of 1 vote

1.convert onto postfix expression.
2.Evaluate the postfix expression.

can be done using stacks or expression trees

- jinu October 06, 2012 | Flag Reply
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0
of 0 vote

Multiple techniques. Fastest (in terms of writing code) would be to use the "eval" feature, if your language supports it.

Otherwise, use shunting yarn + RPN evaluation, parsing to get expression trees etc.

- Anonymous October 04, 2012 | Flag Reply


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