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You're walking through the jungle and you're transporting heavy equipment until you come up to a ravine with a single I-beam across it, and it's the only way across. How can you tell if it's safe to take your machinery across?
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Test Engineer

Interviewed at SpaceX

3.8★
Dec 7, 2020

You're walking through the jungle and you're transporting heavy equipment until you come up to a ravine with a single I-beam across it, and it's the only way across. How can you tell if it's safe to take your machinery across?

There are 25 seats in a row at a bar. Customers come in one at a time, and each customer sits as far away as possible from all other customers. No customer will sit adjacent to any other. Where should you put the first customer for the maximum number of customers?
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Software Test Engineer

Interviewed at Laserfiche

3★
Mar 4, 2010

There are 25 seats in a row at a bar. Customers come in one at a time, and each customer sits as far away as possible from all other customers. No customer will sit adjacent to any other. Where should you put the first customer for the maximum number of customers?

1. Please write a method to normalize a string which represents a file path. For the purposes of this question, normalizing means: • all single dot components of the path must be removed. For example, "foo/./bar" should be normalized to "foo/bar". • all double dots components of the path must be removed, along with their parent directory. For example, "foo/bar/../baz" should be normalized to "foo/baz". That's it. Normally, a path normalization algorithm would do a lot of other stuff, but for this question, don't try any other kind of normalization or transformation of the path. As an example, "foo//bar" should be normalized to "foo//bar" (i.e. a no-op). Use any language you feel comfortable in, we prefer Java, but it’s not required. The method should take in a string (or whatever passes for a string in the language of your choice) and return a string representing the normalized path. Please write code that you feel proud of and would check in to source control in a professional environment. 2. Once you have completed the exercise, please create ten (or more!) test cases you would you use to test the method.
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Software Development Engineer In Test/QA Engineer

Interviewed at Redfin

3.5★
Jan 26, 2012

1. Please write a method to normalize a string which represents a file path. For the purposes of this question, normalizing means: • all single dot components of the path must be removed. For example, "foo/./bar" should be normalized to "foo/bar". • all double dots components of the path must be removed, along with their parent directory. For example, "foo/bar/../baz" should be normalized to "foo/baz". That's it. Normally, a path normalization algorithm would do a lot of other stuff, but for this question, don't try any other kind of normalization or transformation of the path. As an example, "foo//bar" should be normalized to "foo//bar" (i.e. a no-op). Use any language you feel comfortable in, we prefer Java, but it’s not required. The method should take in a string (or whatever passes for a string in the language of your choice) and return a string representing the normalized path. Please write code that you feel proud of and would check in to source control in a professional environment. 2. Once you have completed the exercise, please create ten (or more!) test cases you would you use to test the method.

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